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iPhone 5 battery life is way worse than iPhone 4

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  • godzilabob Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 15, 2012 11:40 AM (in response to holdrege)

    Keja,

    I agree with you regarding signal strength...

    I use my phone almost completely the same ways at home and at work...

    Home days(poor cell signal -100s): 4 hours usage

    Work days (-80):  4 hours usage = 60% remaining charge.

     

    WIFI however is a completely different story, with even longer battery life within a strong WIFI range.

  • iPhone4Lyf Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 15, 2012 11:41 AM (in response to godzilabob)

    Yep, while using strong wifi I will get about 8 - 9 hours usage.

  • iPhone4Lyf Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 15, 2012 11:43 AM (in response to spyd4r)

    Thats funny. Im getting around -98 to -108 and my internet is always usable. Explains the bad battery for me. When Im back in London with 5 bars Im pretty sure my battery life is alright.

  • spyd4r Level 1 Level 1 (40 points)
    Currently Being Moderated
    Nov 15, 2012 11:45 AM (in response to iPhone4Lyf)

    that -100+ being unusable is definitely a lie with that chart though, at home in my basement i am at -108db and with 1 bar i can still surf the web normally..

     

    so take that chart as an approximate with the numbers given.

  • John Mul Level 1 Level 1 (10 points)
    Currently Being Moderated
    Nov 15, 2012 1:33 PM (in response to holdrege)

    Hi,

     

    I finally got my Iphone and did a detailed tests on it. Overall, Im happy with the way its gone (thanks for the initial advice Jameson) and can report on my experience as follows;

     

     

    Forenote: First turn on for the Iphone had it at 50% charge, which is optimal for battery health in storage.  If its flat or fully charged, then you may have an issue as the battery is likely damaged. IF you don’t see improvement by doing what I did in my below report on the charging rotations, then you should call Apple on it.

     

    Set Up

    I set up the Iphone expecting initial high data usage. The phone was set up in line with personal preferences and/or network limitations (not battery saving efforts). To illustrate the power demands I am placing on my handset from the beginning, I have detailed my customization and mapping of my settings, which are as follows:

     

    1. Wifi – 3 saved networks with ‘ask to join networks’ on.
    2. Bluetooth  - On but no devices saved to connect to as yet.
    3. Personal Hotspot – Off.
    4. Carrier – Automatic (phone reads inserted SIM rather then looking for multiple carrier signals on manual)
    5. Do not disturb – set up for night hours (10 hours per day) scheduled on with allowances from “favourites” to ring if recalled within 3 mins.
    6. Notifications – Sorted manually with Phone/Messages/Reminders/Calender/Mail/Linkedin on for mainly banners and badges/alerts. Passbook/Photos/game centre/stock widget and weather widget were taken out of the notifications centre
    7. General
      1. Software – I updated to 6.0.1 immediately so my phone was running post upgrade of the software.
      2. About/Advertising – Limit Ad Tracking turned to “ON”
      3. Diagnostics & Usage – Turned to “Don’t send” and “diagnostics and usage data” was inspected for any crash information in the files. All clear on initialization of the handset (if not, Ring Apple immediately).
      4. Siri – Turned to off
      5. Mobile data – Turned to On/ Enable 3G turned to On/Data Roaming turned to on/Personal hotspot turned to off.
      6. Use Mobile Data for;
        • i.     iCloud Documents – On
        • ii.     ITunes – Off
        • iii.     Facetime – Off
        • iv.     Passbook Updates – Off
        • v.     Reading List – On
      7. VPN – Turned to Off
      8. Autolock – every 3 mintes
      9. Passcode lock – On
      10. Restrictions – Off
      11. Date & Time – Set automatically turned to On
      12. Accessibility – All features turned to Off.
    8. Sounds – Vibrate on Ring/Vibrate on silent turned to On. Ringer change with buttons turned to On. All alerts given ring tones and lock sounds and keyboard clicks turned to on.
    9. Brightness & Wallpaper – I chose one preset screen for the locked screen and a pic I imported on first synch with Itunes to be the unlocked screen wallpaper.. “Autobrightness” turned to “ON”
    10. Privacy:
      1. Location Services turned to “ON”
      2. Camera turned to “ON”
      3. My Vodafone (buggy app) turned to “OFF”
      4. Weather turned to “ON”
      5. Find my phone turned to “ON”
        • i.     System Services
          1. Compass Calibration turned to “ON”
          2. Diagnostics & Usage turned to “ON”
          3. Genius for Apps turned to “OFF”
          4. Location based iAds turned to “OFF”
          5. Mobile Network Search turned to “ON”
          6. Setting Time Zone turned to “ON”
          7. Traffic turned to “ON”
          8. Status Bar Icon turned to “OFF”
      6. Calenders – Permission given to Linkedin to access calendar. No other sharing with apps on the privacy setting.
      7. Twitter/Facebook – No apps sharing here either.
    11. iCloud:
      1. Mail – Turned to “ON”
      2. Contacts – Turned to “ON”
      3. Calenders – Turned to “ON”
      4. Reminders – Turned to “ON”
      5. Safari – Turned to “OFF” (identified bug on Safari bookmark merging eating battery trying to merge old and new bookmarks on iCloud and I don’t rely on my mac or Iphone for work over the internet so I don’t need it ‘on’).
      6. Notes – Turned to “ON”
      7. Passbook – Turned to “OFF”
      8. Photo stream
        • i.     My photostream turned to “ON”
        • ii.     Shared photostream turned to “ON”
      9. Documents & Data
        • i.     Documents & Data turned to “ON”
        • ii.     Use Mobile Data turned to “ON”
      10. Find my iPhone turned to “ON”
      11. Storage & Backup turned to “OFF”
    12. Mail, Contacts & Calenders:
      1. Accounts:
      2. iCloud is already set up with the need syncing functions and this account is the only one syncing with my other devices. Having other email accounts with over the air syncing is a battery issue and has caused issues with iCloud. Not clear if 6.0.1 resolved the exchange issues as my set up is using one account data stream, not multiples on things like contacts/calenders/notes/etc.
      3. Yahoo set up with Mail “ON” and contacts/reminders/calenders/reminders notes set to “OFF”
      4. Gmail set up with Mail “ON” and notes/calenders set to “OFF”. Archive messages set to “ON”
      5. Fetch New Data: Push set to “ON” This autoapplied for the iCloud and Yahoo email but the gmail email account was set to “Fetch” due to limitations on the account.
      6. Mail
      7. Show last 50 messages
      8. Preview 2 lines only
      9. Show To/CC label set to “ON”
      10. Ask before deleting set to “OFF”
      11. Load remote images set to “ON”
      12. Organise by thread set to “ON”
      13. Always BCC myself set to “OFF”
      14. Increase quote level set to “ON”
    • o. Signature set to active
    1. Default account is “iCloud”
    2. Contacts
    3. Sort Order First, Last
    4. Display Order First, Last
    5. Default Account, From my Mac (will be present when first synch complete via ITunes)
    6. Calenders
    • v. New Invitation Alerts set to “ON”
    1. Sync – Events 1 Month ago
    2. Default Alert times active
    3. Shared Calender Alerts set to “ON” (great for 3rd invites)
    4. Phone:
      1. Reply with message inactive
      2. Call forwarding set to “OFF”
      3. Call waiting set to “OFF”
      4. Show my caller ID set to “ON”
      5. Dial assist set to “ON”
    5. Messages:
      1. Imessage set to “ON”
      2. Send read Receipts set to “ON”
      3. Send as SMS set to “ON”
      4. MMS Messaging set to “ON”
      5. Show subject field set to “OFF”
      6. Character Count set to “OFF”
    6. Facetime:
      1. Face time set to “ON”
      2. Use Mobile Data set to “OFF”
    7. Maps are active and set in Miles/Normal Label Size and and Volume
    8. Safari:
      1. Search Engine is Google
      2. Autofill is “OFF”
      3. Openlinks “in new Page”
      4. Private Browsing is “OFF”
      5. Accept Cookies “From Visited”
      6. Reading list use mobile data set to “ON”
      7. Javascript set to “ON”
      8. Block pop ups set to “ON”
      9. Advanced – “Web Inspector” set to “OFF”
    9. 18. Itunes
      1. Itunes Match set to “OFF”
      2. Automatic Download of Music set to “ON” and Apps set to “OFF”
      3. Use Mobile Data set to “OFF”
      4. Music & Videos, factory settings not changed or touched.
      5. Photos – My photo stream and shared photostreams set to “ON”
    10. Twitter – Not installed
    11. Facebook – Not installed
    12. Nike & IPod set to “OFF”.

     

    Battery Charge Testing – Summary Results

     

    The battery charge cycle and rotation (roughly in line with my advise posted some pagers back on this thread) was followed in 3 full rotations and one final charge cycle (recharged at 19%), which yielded the following results.

     

                                                                            Charging Rotations - Averages

    Details                                                    1st                    2nd                   3rd

    Per %  Battery “usage” in Mins                  1.08                0.57              0.59

    Per % Battery “standby” in Mins                4.07                3.55              4.50

    Data Average Sent Per Minute                  6.23kb            7.30kb           1.68kb

    Data Average Received Per Minute           30.14kb          28.27kb          5.50kb

     

    FINAL CHARGE (Actuals)

     

    Per % Battery “usage” in Time                   4.34mins                    

    Per % Battery “standby” in Time               21.23mins                 

    Data Average Sent Per Minute                    0.3kb             

    Data Average Received Per Minute             0.6kb

     

    Battery Usage Mapping.png

     

     

    I ran some numbers of the stats I did and based on the combined average usage per charge per minute of data to total charge used by time, I plotted the effect of average usage (mapped out over the charge used & usage time) and average standby (mapped out over the charge used and standby time) in terms of % per minute of usage and standby time respectively. When you map the data usage over this 5-7 day period, you see some interesting behavior as mapped below.

     

    Firstly, the blue and red spikes are adjusted to the level of data transfer that has gone on corresponding to the timeline on charges 1-13 and show clearly that the deep charge down to circa 20% remaining has and increasingly positive effect on the battery life in terms of battery percentage usage per minute (averaged). The effective of 1 long charge to 3 short charges has seen the increase in usage and standby power as a result. The other thing to note is that the major debilitator of batteries on smartphones (data usage) is factored into the mapping above given you a clearer picture of how the battery handles with overall power usage V time. In essence the skewing effect of data is removed from the mapping of battery power performance.

     

    It is noted that this was not a clinical test and many variables were ignored in testing. This is intended to show real world “topline” performance of the handset in normal “mid level” usage conditions where signal on cellular is variable in strength and wifi signal is variable also. Its also intended to show the effect of using a charging rotation of 1 full charge (recharge at 20%) to every 3 top up charges (recharge at c80%) in order to see if it effects battery performance in the short term when operated from new as I have done.

     

    Battery Charge Testing – Charge Details

     

    1st Full Charging Rotation (1st two had WIFI/Bluetooth on, 2nd two were 3G only)

     

    1st Charge (20% remaining)

     

    Standby 23 hours, 14 Minutes; Usage 6 Hours, 16 Minutes

     

    Points to note;

     

    1. Wifi & Blue Tooth on for 12 hours – in cell range only for 4 of these hours but wifi not working properly (crappy modem router now dumped for netgear D3700 in 3rd charging rotation) so all activity was cellular based.
    2. Cell only for the balance of 11 hours and 14 minutes
    3. Majority of the in use was browsing, emails & texting. 4 minutes only of calls
    4. 3g (no 4g/lte) on 1 bar to 5 bars, intermittent.
    5. Sent 2.4mb of emails/synching
    6. Received 28.1 MB of data in 4 applications (1 HD) downloaded and emails received.
    7. Left Iphone 5 overnight unplugged to a charger with macbook on (emails and calendar open on macbook) and it synched all night droping from 36% to 30%.

     

    2nd charge (55 % remaining)

     

    Standby 8 hours, 15 Minutes; Usage 3 Hours, 15 Minutes

     

    1. Wifi & Blue Tooth on for 8 hours – in cell range only for 6 of these hours but wifi not working properly (crappy modem router now dumped for netgear D3700) so all activity was cellular based.
    2. Majority of the in use was browsing, music playing, emails & texting. 58 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 5 bars, changeable/intermittent but at 1 to 2 bars for over 2 hours.
    4. Sent 3.9mb of emails/syncing
    5. Received 36.1 MB of data in browsing, downloaded and emails received.

     

    3rd charge (70% remaining)

     

    Standby 14 hours, 20 Minutes; Usage 2 Hours, 2 Minutes

     

    1. Wifi & Blue Tooth off for full standby time. 3g only.
    2. Majority of the in use was browsing, music playing, emails & texting. 8 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 3 bars, changeable/intermittent but at 1 to 2 bars for over 2 hours.
    4. Sent 2.1mb of emails/synching
    5. Received 6.2 MB of data in browsing, downloaded and emails received.
    6. Phone on 3g only all night with macbook pro also on. Emails and Calendar were active and syncing all night, battery dropped by 6% to 94% on cell versus 4%-5% on Wifi for the 1st and 2nd charge. 

     

    4th charge (75% remaining)

     

    Standby 3 hours, 15 Minutes; Usage 2 Hours, 2 Minutes

     

    1. Wifi & Blue Tooth off for full standby time. 3g only
    2. Majority of the in use was browsing, music playing, emails & texting. 16 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 3 bars, changeable/intermittent but at 1 to 4 bars for over 2 hours.
    4. Sent 2.4mb of emails/synching
    5. Received 3.4 MB of data in browsing, downloaded and emails received.
    6. Phone on 3g only and with macbook pro also on. Emails and Calendar were active and syncing especially for 1 hr. 30 mins of the usage time as I was manually entering calendar appointment onto my mac-book and it was synching to the Iphone…

     

     

     

    2nd Full Charging Rotation (3G Only – No WIFI or Bluetooth)

     

     

    1st charge (22% remaining)

     

    Standby 1 Day, 3 Hours; Usage 6 Hours, 29 Minutes

     

    1. Wifi & Blue Tooth off for full standby time. 3g only
    2. Majority of the in use was browsing, music playing, emails & texting. 33 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 3 bars, changeable/intermittent but at 1 to 4 bars for over 2.5 hours.
    4. Sent 3.1mb of emails/synching
    5. Received 13.4 MB of data in browsing, downloaded and emails received.
    6. Phone on 3g only and with macbook pro also on. Emails and Calendar were active and syncing

     

    2nd charge (67% remaining)

     

    Standby 6 hours 46 minutes ; Usage 2 Hours, 4 Minutes

     

    1. Wifi & Blue Tooth off for full standby time. 3g only
    2. Majority of the in use was browsing, music playing, emails & texting. 10 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 5 bars, changeable/intermittent but at 1 to 4 bars for over 4 hours.
    4. Sent 3.9mb of emails/synching
    5. Received 22.4 MB of data in browsing, downloaded and emails received.
    6. Phone on 3g only and with macbook pro also on. Emails and Calendar were active and syncing

     

    3rd charge (84% remaining)

     

    Standby 2 hours  4minutes ; Usage 1 Hours, 54 Minutes

     

    1. Wifi & Blue Tooth off for full standby time. 3g only
    2. Majority of the in use was browsing, music playing, emails & texting. 0 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 2 bars, changeable/intermittent
    4. Sent 1.7mb of emails/synching nothing I set up VIP email contacts and extensive calendar reorganization. I also reset GPS / Location services and re-permissioned apps and services for GPS location access due to a buggy Vodafone apps that crashed on me and recorded two crash logs on the handset. The reset allowing GPS permission access seems to have worked but the app is now sending daily location reports back to Vodafone via cellular.
    5. Received 4.6 MB of data in browsing, downloaded and emails received.
    6. Phone on 3g only and with macbook pro also on. Emails and Calendar were active and syncing.

     

    4th charge (80% remaining)

     

    Standby 12 hours  37 minutes ; Usage 1 Hours, 34 Minutes

     

    1. Wifi & Blue Tooth off for full standby time. 3g only
    2. Majority of the in use was browsing, music playing, emails & texting. 2 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 2 bars, changeable/intermittent
    4. Sent 2.5mb of emails/synching.
    5. Received 7.5 MB of data in browsing, downloaded and emails received.
    6. Phone on 3g only and with macbook pro also on. Emails and Calendar were active and syncing.
    7. At the end of the 2nd charging rotation, I note on my Vodafone data usage, Ive clocked up 44 MB of billable data usage which including initial set up coinsides with these logs. On my phone including set up, I have noted that there is a upstream and downstream data usage that is over double this number. Background synching and data transfers don’t get charged to my account.

     

     

     

    3rd  Full Charging Rotation (3G with WIFI/Bluetooth on)

     

    1st charge (28% remaining)

     

    Standby 1 Day 9 hours; Usage 6 Hours, 32 Minutes (approximate)

     

    1. Wifi & Blue Tooth on for full standby time. 3g only coverage for 6 hours approx of coverage. In this time, I had about 2.5 hours of usage including 15 minutes of calls, emails /apps and internet browsing.. Wifi not working properly (crappy modem router now dumped for netgear D3700) so all activity was cellular based.
    2. Majority of the in use was browsing, music playing, emails & texting. 24 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 5 bars, changeable/intermittent
    4. Sent 3.6mb of emails/synching.
    5. Received 10.5 MB of data in browsing, downloaded and emails received.
    6. Phone on 3g only and with macbook pro also on. Emails and Calendar were active and syncing.
    7. During this charge cycle, one of the apps gave me trouble loading a page for nearly 20 minutes on cellular only which saw heavy use as the malfunctioning app (Linkedin) was pumping cell signal (3 bars) to get a page loaded. I had to hard reset the phone to correct the malfunction but no crash logs noted on the handset for this issue. The reboot saw me loose my “usage and standby” numbers but I remembered the start times and calculate my approximate usage on checking it this morning before the app malfunctioned. Its noteworthy the 6% drop in battery over 4 minutes when the app was malfunctioning trying to load the “groups” page on 3g cellular was immediately corrected when I did the hard reset and the Linkedin app loaded the “groups” page over 3g cellular within seconds of me clicking.

     

     

    2nd charge (86% remaining)

     

    Standby 5 hours  32 minutes ; Usage 1 Hours, 9 Minutes

     

    1. Wifi & Blue Tooth on for full standby time. 3g only. Wifi not working properly (crappy modem router now dumped for netgear D3700) so all activity was cellular based.
    2. Majority of the in use was browsing, music playing, emails & texting. 3 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 2 bars, changeable/intermittent
    4. Sent 255kb of synching.
    5. Received 609kb of data in browsing, synching and emails received.
    6. Phone on 3g & wifi and with macbook pro also on. Emails and Calendar were active and syncing.

     

    3rd charge (64% remaining)

     

    Standby 16 hours  46 minutes ; Usage 2 Hours, 24 Minutes

     

    1. Wifi & Blue Tooth on for part of standby time. 3g only for 10 hrs 30 minutes as I slept and did change over to Netgear dual band modem. Just connected via wifi at 64% whilst phone was searching for old SSID signal via WIFI. Deliberate battery drain proved battery robust.
    2. Majority of the in use was browsing, music playing, emails & texting. 24 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 3 bars, changeable/intermittent
    4. Sent 1.9 mb of synching.
    5. Received 7.2mb of data in browsing, synching and emails received.
    6. Phone on 3g & wifi for part of the time and with macbook pro also on. Emails and Calendar were active and syncing after connection re-establihsed via wifi on macbook end..

     

    4th charge (73% remaining)

     

    Standby 6 hours 15 minutes ; Usage 2 Hours, 55 Minutes

     

    1. Wifi & Blue Tooth on for part of standby time. Out of range for 4 hours approx. of wifi.
    2. Majority of the in use was browsing, music playing, emails & texting. 26 minutes only of calls
    3. 3g (no 4g/lte) on 1 bar to 3 bars, changeable/intermittent
    4. Sent 777 kb of emails/synching.
    5. Received 2.7mb of data in browsing, synching and emails received.
    6. Phone on 3g & wifi for part of the time and with macbook pro also on. Emails and Calendar were active and syncing

     

    FINAL Charge (Full) – (19% remaining)

     

    Standby 1 Day 20 Hours; Usage 9 Hours, 23 Minutes

     

    1. 1. Wifi & Blue Tooth on for all of standby time. Out of range for 3 hours approx. of wifi.
    2. 2. Majority of the in use was browsing and music playing. 24 minutes only of calls
    3. 3. 3g (no 4g/lte) on 1 bar to 3 bars, changeable/intermittent
    4. 4. Sent 70 kb of synching.
    5. 5. Received 153kb of data in browsing, synching and emails received.
    6. 6. Phone on 3g & wifi for part of the time and with macbook pro also on. Emails and Calendar were active and syncing

     

     

     

    Conclusions;

     

    After completing the exercise, I note the following conclusions;

     

    1. Battery life does get better from set up IF you set it up the way you need avoiding unnecessary and/or unwanted functionality that uses battery life and leave the handset be. The impacting data usage will subside as I have proven in this exercise. “Jameson” said this ages go and was right.
    2. The shortening of battery life on an average charge is affected by intermittent cell signal as I operate in such an environment on 3g but also data usage, which is heavy at first.
    3. Using a charging routine like I recommended for a lithium ion battery will increase its durability and retention ability on the charge cycle.
    4. The resolution of bugs by Apple in its software one by one will decrease incorrect data requests and usage by the software, but also the “buggy” apps use of data needs to be resolved. Those getting better battery life by a hard reset of the handset are most likely resetting a buggy application on their handset that is looping on data requests.
    5. The handset is potent, just buggy and with 6.0.1 is getting better. That said, I would ensure your home wifi modem router is up to date as my old haweuei modem router apparently wasn’t talking nicely with my new Iphone upto FINAL charge, when my new Netgear modem router kicked in and talked nicely with it. Just beaware you could be using cellular on an old modem, check your mobile data usage when in your home and having a wifi signal registered on your phone.
    6. Phones functionality blows Blackberry (last phone) out of the park, battery life is what I would expect for a smartphone of today, but I would like to see a more powerful battery for increased functionality on future models.

     

     

    All the best

     

     

    John Mul.

  • iPhone4Lyf Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 15, 2012 1:53 PM (in response to John Mul)

    Hi there,

    Thanks for the very detailed guide (?) and results. I have read through everything and admittidly, im having trouble understanding your charging routine. Could you post just the routine you used?

  • kearneypd@mac.com Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 15, 2012 1:59 PM (in response to holdrege)

    I was getting 4-5 hours at max on my IPHONE 5 doing while on standby.  Usage and Standby always stayed the same.

    I read a lot of different things about how to fix it, and tried several of them. Nothing worked. SOLUTION; You need to reset your IPHONE and not restore from backups. Go to settings, general, reset and "Erase all content and Settings". SETUP As new phone. Then set up your icloud, and let it all sync. Reset your email. Plug into computer for Itunes. Between icloud and itunes, I got all my apps and tunes. Somehow, even pictures I took on the phone recently, but not my other photos that I downloaded from IPhoto; I'll need to do that again. Very very happy now with the life of my battery.  Usage and Standy very different now.

  • iLoveiPhone85 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 15, 2012 2:40 PM (in response to spyd4r)

    Wow.. My AT&T cell strength is -63 .. That's 99% of the time I use the battery draining phone. 

  • iLoveiPhone85 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 15, 2012 2:42 PM (in response to John Mul)

    John! Thank you so much for posting this! I have to read into it more later when I'm on my laptop but thank you for your time!!

  • spyd4r Level 1 Level 1 (40 points)

    well... apple swapped my phone even though nothing was found to be wrong with it...

     

    still wish apple engineers would ust come forward and admit an issue with software.

  • John Mul Level 1 Level 1 (10 points)
    Currently Being Moderated
    Nov 15, 2012 3:46 PM (in response to iPhone4Lyf)

    Hi,

     

    I posted about 30 pages back best practice in charging routines for Lithium Ion batteries which I will see if I can dig up and post the link to them. I used this routine when I got my Iphone and will continue to use it as best I can. Its basically this;

     

    Charge Rotation

     

    1st Charge - Let the battery % drop to approx.20% and recharge to 100%

    2nd Charge - Let the battery % drop to approx.80% and recharge to 100%

    3rd Charge - Let the battery % drop to approx.80% and recharge to 100%

    4th Charge - Let the battery % drop to approx.80% and recharge to 100%

    Rotation Complete, restart from "1st Charge".

     

    I shall try dig out the old post on battery treatment and charging routines for ya.

     

    Best Regards

    John

  • John Mul Level 1 Level 1 (10 points)
    Currently Being Moderated
    Nov 15, 2012 4:00 PM (in response to iPhone4Lyf)

    Here is what I posted on Page 124 of this thread before iOS 6.0.1 ... lol.. many moons ago...

     

     

     

    From following this thread alone, I can say that Apple know about the problem and like iphone 4 will fix the problem in iOS6.0.1 which seems to be in the phones software reading the battery meter and also signal boost on cellular for below 4 bars and how it switches between 3G and 4G/LTE. This is coming for sure folks, and I think it will cure the carrier signal issues and the rest of the beta test bugs they are working on...

     

    I am a macbook pro user and like the Iphone, the macbook has a litium ion battery which is a dense and powerful battery that requires care and attention. Afterall, we are paying big bucks for our apple products and expect them to last ergo the need to actively care for them to make them really last, so after reading Apples advice on it, allow me to post the following battery care pointers and tips that apply before and after Apple release the beta bug fixes in 6.0.1...

     

    Firstly, take a look at the below litium ion charge graph;

     

    Ion Battery Charge Map.gif

     

    As you can see there is a 2 - 5 hour window of charge that has two phases.  A Charge cycle includes the two phases and you should get about 400 "charge cycles" before you will see degregration of the battery from "100%" by apples optimium numbers. On the two charge phases, the first is the rapid charge from below 80% to 80% battery capacity, this is a high voltage affair which brings the batttery relatively quickly to 80% and the voltage lowers to have a longer charge time in the second phase which brings it to 100%. If you can charge your device regularly before it drops below 80% and run the battery down to way below 80% at least once a month, you will optimize the batteries ability to retain a charge, increase accuracy of the battery meter and extend the battery life.

     

    Please bear in mind that the chemical construct of the battery requires it to be used 'off mains" regulary and not left in a sleep state for long periods of time. If you are not using your Iphone (or Mac, etc) for long periods of time, the best charge % is circa 50% as this half charge will increase the ability of the phone to hold a charge when you power it back up.

     

    Post 6.0.1 and after all the temporary fixes folks have put in place are no longer needed, It is reccomended that you set up your phone in the best way for your needs but take into account the following tips for extending your battery charge on any given day;

     

    1. Adjust brightness - 100% on any screen is never a good idea. Even 5%-10% will help with battery charge span

     

    2. Turn off Push Email - If you are not using the email for work, then maybe push email is not really needed or wanted. If so, it should help with battery charge span

     

    3. Extend the fetch data intervals for email/contacts/calenders. Big eater of battery life is cellular transmission we all those reading this thread knows, setting your fetch data intervals to intervals that you are comfortable with will affect your battery span. Longer the interval, longer the battery span.

     

    4. Turn off push notifications from Apps that you dont need it on.

     

    5.  Autolock your Iphone to prevent accidental screen activiations

     

    The above should help pre-6.0.1 on Iphone but the savings and match offs for your Iphone obvoiusly wont become until the operating system beta bugs are patched in the release.

     

    Hope this helps...

     

    John

  • John Mul Level 1 Level 1 (10 points)

    Your welcome 85, and wow -63dbm of a signal is aweful... I presume you are like me and on the periphery of a local tower signal area. I would talk to your carrier about that and their plans to get more towers up, etc... mine here is not great either cos of my location at home being on the periphery of the tower broadcast area and thus subject to variance due to noise/traffic, etc... but I have to say, the iPhone gets the job done on little signal.. it just uses juice in the process... but as I have proven with my numbers, not too much that functionality is comprimised and with proper charging routine, it will get better.. I reckon internet browing over 3g in a 2 bar signal area is about 40% faster then my now retired blackberry 9900 on the same signal strength...

  • LEECK78 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 15, 2012 4:42 PM (in response to holdrege)

    Hi john mul, so am i right to say that it is not wise to charge our phone before it turns flat?

    As my practice is just simply plug and charge when it hits 1%. Never there's knew such theory behind.

  • iLoveiPhone85 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 15, 2012 4:42 PM (in response to John Mul)

    @John: I get so confused! I was reading someone else's post and it said that -63 would be a good number! Not an awful one. So it's horrible cell service? I don't understand why I always have full bars on 4G/LTE. It drops down one occasionally. I mean isn't it a pretty accurate cell reception indicator on our iPhones or no? Thanks John!

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