Q: iPhone 4S 5.0.1 Update Improves Battery w/ Settings Reset

Last check before my phone turned off.

3%

8hrs 38min usage

1day 2hrs standby

I'll do a full charge tonight and then see what round 2 brings us.

Thanks!

Ok, guys. I'm going to try something else that was mentioned in this post. I completley drained the battery, and I'm going to charge it overnight. However, before the battery fully drained, I closed all apps in the fast app switch bar, turned off the battery percentage and turned on Airplane Mode. I really hope this works...

chaboogie wrote:

 

I think i need to follow these steps because i think something may be wrong with my battery. I did notice today for aobut 3 hrs on standby it only dropped 1% but as soon as i picked it up to use it, i started to notice the drain. I used my phone for about 7-10 mins... made 1 call, went on twitter and facebook for aobut 2-3 mins each tops, and i dropped all the way down to 94%. is that normal? what should i do? it seems like my standby time is decent but as soon as its in use the battery drains awfully fast. HELP ME PLEASE!

Sounds like my battery.

I have horrible battery life with my 4s ... Reset and am now draining the battery prior to doing a full charge.  Will let you know my results.

my battery status after tried the resetting and fully discharged and fully charged.. but the performance like not too good.

left 8%

usage 6hours 0 minutes

stand by 19 hours 46 minutes.

=(

Thanks David. This was very useful, i found a decent battery life doing what you mentioned on my 4s in 5.0.1.

After third battery drain here are my results

battery percentage 2%

Usage 8 hours 14 minutes

Standby. 1 day 7 hours

I run on wifi 95% of the time. My location services are on for camera, weather and find my phone. 8 plus hours of usage included web surfing, checking emails, playing games, listening to music and texting.

Follow davidch's instructions and keep letting battery drain. I found that after each battery drain my battery got better. Loving this phone now!

lindafromgreenport wrote:

 

After third battery drain here are my results

 

battery percentage 2%

Usage 8 hours 14 minutes

Standby. 1 day 7 hours

 

I run on wifi 95% of the time. My location services are on for camera, weather and find my phone. 8 plus hours of usage included web surfing, checking emails, playing games, listening to music and texting.

 

Follow davidch's instructions and keep letting battery drain. I found that after each battery drain my battery got better. Loving this phone now!

Your results look very good.

I did some research on battery life/meter calibration a while back (from research papers/apple printed advice/Dell, HP, etc).

The rule of thumb is for a new phone/battery, is that 2-3 cycles as you have done, will optimize the battery meter calibrations. After that, once a  month is recommended, although personally, I let a few months slide by. The reason is that today's batteries have 400 full charge/full discharge cycles to their lifetime, but a much, much greater tolerance for partial discharges and then full recharge. So it is better to go to bed with a 40% battery left and let it charge over night, then just letting go to 0%,if there is no reason to do so (i.e. you are sleeping anyways).

But once every 1-3 months a full cycle is  necessary to calibrate the battery meter. Otherwise the phone shuts off due to the software...and not because the battery is drained.  Which is what I think happened under 5.0 and 5.0.1, until Davidch fix. For myself, I only do the full discharge if I notice significant changes in my battery usage/standby ratios.

Hopefully, Apple will have a 5.0.2 fix for this problem, without having to do davidch's procedure, and bring us back to how things worked prior to 5.0.  Clearly, for most people, it is not a hardware problem.

First time posting, just got my iphone 4s and it has horrible battery life, guess ill try this.

Literally from the time I wake up and go to the gym and leave to get back home and take a shower (elapsed time of 90 minutes) my iPhone 4s is at 70% down from 100%, my old iPhone 4 would be at 98%. 

Now at work it is sitting at 59% I haven't done anything intensive at all, fustrating issue.  i don't know what else to do, i may return it and stick w/ my old iPhone 4.*sigh*

What I have done:

restored as a new iphone

updated iTunes to latest version

running on an iMac w/ OS 10.7 fully updated

chaboogie wrote:

 

I think i need to follow these steps because i think something may be wrong with my battery. I did notice today for aobut 3 hrs on standby it only dropped 1% but as soon as i picked it up to use it, i started to notice the drain. I used my phone for about 7-10 mins... made 1 call, went on twitter and facebook for aobut 2-3 mins each tops, and i dropped all the way down to 94%. is that normal? what should i do? it seems like my standby time is decent but as soon as its in use the battery drains awfully fast. HELP ME PLEASE!

It doesn't seem that bad. The meter usage may not be that linear through its range, esp. at the greater than 90% range.  Better to look at the bigger picture (how much average usage over the day) then little snapshots of time.

I can certainly OCD on the details, but it is best to look at the total usage. Your experience reflects mine.

I'm very disappointed with my battery. My attempt yesterday did nothing.

Current Stats:

52%

Usage: 1 hour, 45 minuets

Standby: 7 hours, 52 minuets

When I use it, I can literally watch the battery drop.

This is extremely frustrating. I don't know what I'll do if iOS 5.0.2 doesn't fix this.

right now my usage is 2 hrs 12 mins 14 hrs 17 mins standy with 70% battery and dropping smh... i really hope 5.0.2 helps out because this is ridiculous.. i shoulda stayed with my android

chaboogie wrote:

 

right now my usage is 2 hrs 12 mins 14 hrs 17 mins standy with 70% battery and dropping smh... i really hope 5.0.2 helps out because this is ridiculous.. i shoulda stayed with my android

At this rate you will get 7  hours of 'usage time' over a 48 hour period. How is that ridiculous? It is right on with what to expect, and what others normally get with iOS 4.x with an iPhone 4 or  3GS.  The 7  hours is right on spec with Apple documents.