Q: iPhone 4s Battery Life?

bero279 wrote:

 

Dear Experts

 

I need your help.

I got new iPhone 4S and i'm new to the iPhone.

After i complete the full charge up to 100 %, then my battery go down 1 % almost every one hour (i will not be using the iPhone in this time... and no applications ON).

 

Is it normal?

 

Also, what is the normal / good battery performance for new iPhone 4S usually?

how long it must stay if i'm using normal usage and few times checking email or facebook?

 

 

thanks and regards

Sigh.

Ok, if the battery goes down 1% each hour, you will get over 4 days standby time.  Just WHAT do you expect?  For most normal use, if you can use the phone as you want to use it, and it makes it from when you get up, until when you go to bed without needing a recharge, you are doing fine. 

Also, the iPhone 4S is a COMPUTER, with phone capabilities.  Someting is going on ALL the time.  It is checking to maintain your phone connection, seeing if wi-fi is available, watching for Bluetooth connection (if on), watching the home button for presses, watching the sleep button for presses, checking to see if any alarms need to be sounded, and checking to see if calls are incoming, texts are incoming, etc.  All of these functions are running, and using battery power as long as the phone is not powered off.

bero279 wrote:

 

Thanks DevilMark for your reply and help

 

Actually my iphone is now more than a week. I did drain the battery till shutdown and then full charge it.

 

It's draining almost 1 - 1.5 % per hour when am not using the iphone.

For example: I removed the charger today @ 08:00 am and it was fully charged (100 %).

i didn't open any application and i kept the phone without using it (only i had two calls each one for less than minute)...
now it's 04:00 pm and the battery is now 90 % which means (10 % in 8 hours = more than 1 % per hour).

i'm in the office and the wirless is on (so no 3G is been used).

I did on the location services ONLY for the (Find My iPhone) application; and all remaining off.

 

I limited my noticifications to the below only:

Phone, Messages, Rimnders, Calendar, Skype, WhatsApp

 

All other noticifications are off.

Also since morning i didn't use or log to Skype or used the WhatsApp.

 

Siri is OFF.

Phone since morning is almost black screean, and i ensure that no App is opened in bacjgound (by making two clicks on the middle button and assuring that no anything open).

 

Sorry for this long story.

 

Do you think that the battery performance is normal like this or no?

 

I just want to be sure that my battery life is normal / good taking into consideration that it's a new phone (8 days).

 

thanks for the help

Actually, it is somewhat better than average.

714ms3 wrote:

 

To rphunte42 and Chris CA,

 

Any battery, regardless of it's type, has a max number of charge cycles. Every time the device is plugged in to charge, it is diminishing the life of the battery.

Read a bit more about how batteries work befire jumping down my throat about it. I work in a PMU lab and our focus is on maximizing battery power.....but thanks for playing.

You need to read a bit more on lithium ion batteries, specifically.  Partial recharge cycles are actually less detrimental to the total charge cycle life than full discharge cycles.  This issue is specifically explained in the Apple battery docs.  If you guys don't know more than this, then you need to do some more research.

Why is this so hard to understand? The battery can only be charged so many times before it loses it's ability to charge as it did originally, until it can finally no longer hold a substantial charge.

Stop reading the Apple KB's and pick up a text book, or at the very least read up on the web.

I am having some major battery issue with my iPhone 4s. I have got my phone swapped once. it did not make much difference.

The first 2 days the new iphone had battery life as below:

Stand by time : 1Day 20 Hrs approx.

Usage time : 6 Hrs 30 mins approx.

After that it changed back to what I was getting on my previous 4S.

Stand by time : 20-24 Hrs  approx.

Usage time : 5 Hrs 15 mins approx.

Usage Type - I am a normal to Moderate user. I have my Locations off completely. No Push mails at all. I play games for 1-2 hrs max in a day. calling could be 15 mins a day. Bluetooth switched on for 20 mins a day max.

I keep on changing my basic settings to get better battery life in my iPhone 4s. recently what I did was to switch off cellular data. I switched it off for couple of hours and I noticed a bit improvement in battery drain. I do not have concluding figures as I did that for few hours only.

Now, I tried switching back on my cellular data. I had a real hard time. Though the switch said on, I was not able to connect to internet. I tried accessing web and mails I received a message 'could not activate the cellelar data'.

In the mean time I saw that 'personal hotspot' wheel kept on spinning. This lasted for almost 1/2 an hour. During this 30 mins my battery drained 10-11%. I tried hard reset, simple switch off and on. couple of things and nothing happened.

it's been 1 Hr now and my internet is still not running well. The Hotspot wheel is spinning. Have tried opening google and have to reload it couple of times. It's slow. few of of my games requiring internet connection are behaving awkwardly as well.

Could Personal Hotspot be the culprit ?

Your stats on both phones match mine. Thanks for sharing!

But are you running Personal Hotspot all the time? Why the heck would you need that *all the time*? I guess that must be a major power consumer.

I guess I forgot to mention in my earlier post. I am not subscribed to any Personal hotspot connection. This service is of no use to me. Then it bothers me more, why would I waste my precious 4S battery on a service which I don't use ever.

714ms3 wrote:

 

To rphunte42 and Chris CA,

 

Any battery, regardless of it's type, has a max number of charge cycles. Every time the device is plugged in to charge, it is diminishing the life of the battery.

Read a bit more about how batteries work befire jumping down my throat about it.

I in no way jumped down your throat.

I work in a PMU lab and our focus is on maximizing battery power.....but thanks for playing.

When people start stating their "qualifications" that almost always means they have no idea what they are talking about.

Seriously...

But hey, thanks for playing...

714ms3 wrote:

 

Why is this so hard to understand? The battery can only be charged so many times before it loses it's ability to charge as it did originally, until it can finally no longer hold a substantial charge.

and?

714ms3 wrote:

 

To rphunte42 and Chris CA,

 

Any battery, regardless of it's type, has a max number of charge cycles. Every time the device is plugged in to charge, it is diminishing the life of the battery.

Read a bit more about how batteries work befire jumping down my throat about it. I work in a PMU lab and our focus is on maximizing battery power.....but thanks for playing.

Wrong. When the phone is at 100% it is no longer charging and it is using the power from the cord. Yes every battery has a max number of charge cycles but when the battery is at 100% it is no longer charging so it is not dimishing the battery. Chris was actually right. You are actually wrong.

Go here if you don''t believe me.

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batterie s

While this is off-topic, I just want to point out that personal hotspot is not a service that you subscribe but rather a means for you to share your iphone's 3G connection with other wifi devices around you. Simply said, through the personal hotspot you create your own wifi network using your iphone.

714ms3 wrote:

 

KC7GNM wrote:

 

Over 3 hours at 50% is normal. What more do you expect?  Apple says 6 hours of Internet use on their website on 3G and 9 hours on wifi but those numbers are only if you do just that. That doesn't take into account phone calls or texting or location services. If you want better I challenge you to find an android phone that does better. Quit whining because you don't get 24 hours usage off one charge.

 

Considering I am inside the whole day on wi-fi, I would say that 6 hours is in fact not normal. If it was, do you think that there would be 806 pages in this topic thread? I think not. Look pal, we are all Apple fans here, but let's call it like it is; Apple has designed something with a serious flaw here. They have already acknowledged this fact. Why you have to be rude and arrogant in defending them when they won't even defend themselves is beyond me.

Had you read my post prior to responding without thinking, you would have read that I had turned off all location services and was strictly using wi-fi.

Also, where was it stated that I wanted 24 hours of use on a full charge?

Thirdly, there are a number of Android phones that can last much longer. Nokia, Motorola and Samsung all make 1 to name a few....would you like a link to a site that can support this?

 

Stop being such a fanboy, but more importantly, stop being rude and trying to make enemies in a place that is designed to support Apple consumers and their fans.

Not being rude but you expect exactly 8 hours or more on wifi when if you look at the website this is what it says for battery usage.

http://www.apple.com/iphone/specs.html

• Built-in rechargeable lithium-ion battery
• Charging via USB to computer system or power adapter
• Talk time: Up to 8 hours on 3G, up to 14 hours on 2G (GSM)
• Standby time: Up to 200 hours
• Internet use: Up to 6 hours on 3G, up to 9 hours on Wi-Fi
• Video playback: Up to 10 hours
• Audio playback: Up to 40 hours

Do you notice they say Up to and not exactly thos many hours. Also did you turn off cellular data when you were in your wifi building? You do realize those numbers are based on tests done in a lab and of course they are going to be better than in actual use.

As far as android I have seen actual android phones last a lot shorter than the iphone does. My daughters and some of my friends have android and they constantly have to charge them up because they can't hold a charge for half a day. Yeah you can probalby find websites that say they last a godly amount of time but in reality when you are using the phone in a normal manner the times they quote are not going to be accurate. Everyone uses their phone different and everyone will get different usage stats.

The only thing I am getting tired of seeing is people like you that think the phone has a flaw when it doesn't.

714ms3 wrote:

 

Why is this so hard to understand? The battery can only be charged so many times before it loses it's ability to charge as it did originally, until it can finally no longer hold a substantial charge.

Let's say by doing a full discharge then full charge, the battery will get 400 full cycles.

Doing only a 25% discharge then a full charge, you will get more than the 400 full cycles since a partial discharge does not hurt the battery as much as a full discharge.

Chris CA wrote:

 

714ms3 wrote:

 

Why is this so hard to understand? The battery can only be charged so many times before it loses it's ability to charge as it did originally, until it can finally no longer hold a substantial charge.

Let's say by doing a full discharge then full charge, the battery will get 400 full cycles.

Doing only a 25% discharge then a full charge, you will get more than the 400 full cycles since a partial discharge does not hurt the battery as much as a full discharge.

Exactly Chris but the so called expert thinks otherwise. That is why I posted this link to explain to him just what you just said here.

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batterie s

to: rphunte42

Thanks for your help

now my update as below:

battery: 36 %

Usage: 3 Hours, 14 minutes

Standby: 1 Day, 1 Hour

WiFi is on most of the time but more important that since the last full charge i'm trying not to use the iphone that much... in order to check the battery.

i used it like 10 minutes facebook, send 2 sms, checking my emails only for 5 minutes...

making around three calls (each call 1 - 2 minutes).

all other time it's in the sleep mood.

I did on the location services ONLY for the (Find My iPhone) application; and all remaining off.

I limited my noticifications to the below only:

Phone, Messages, Rimnders, Calendar, Skype, WhatsApp

All other noticifications are off.

Also since last full charge i didn't use or log to Skype or used the WhatsApp.

Siri is OFF.

Phone most of the time is almost black screean, and i ensure that no App is opened in bacjgound (by making two clicks on the middle button and assuring that no anything open).

What do you think?