Q: iPhone 5 battery draining very fast

When your phone is turned off it reverts from WiFi to 3G or in your case nothing.

So it still uses your coverage even though it's 2G it could mean that there's an issue with the chip in your phone.

When I'm on WiFi and have turned cellular data on it drops about 1% per 45-50 minutes. Which is somewhat acceptable.

This issue is hitting phones that have been working fine out of the blue now. 

My wifes phone "went" 3 days ago and now a colleagues phone has just "gone"  ... full charge in am and ntg by 1pm v low use.

KEEP AN EYE ON YRE PHONES!

Been a while since I posted but thought i'd let you know that I'm getting much better battery life since manually turning off cellular data when using wifi. So I'm also of opinion that a prime cause of problems is in this area.

Latest usage is over 7hrs, 26hr standby with 30% remaining.

That's with varied use: browsing,  emails, games, video streaming (wifi) etc.

Awaiting iOS patch to see if it helps.

brsm, I agree with you. I'm not convinced it IS software. We'll know if that is the case more clearly after the update. If people are still having issues after they update their phones software it is more likely it's hardware on some phones. On quite a few phones. In which case I hope Apple comes up with perhaps a phase in replacement program.

Definitely software issues.  I am on my 2nd iPhone5.  The first one we did a restore from icloud and out of the gate I had battery life of almost 4 hours, tops. didn't matter if I used it or not.   So returned the phone and they just gave me a new one.  I didn't do a restore on this one and it worked fine, battery went all day.  well, that was only for about 2 weeks.  I was in the UK on vacation and it was fine. got back to chicago and back to the same problem.  the phone has been on the 4 hour life for a couple days now.  So I did a wipe and restore from backup last night. and come this morning it lasted about 4 hours!   I can wipe again and go back to setup as new, and I suspect it will work fine for a week or two before it reverts back to sucking.   this is my 3rd iphone (3, 4, and 5) and this is the only one with issues.  usage has not changed. apps basically the same from the 4.  battery life awful!

I will return for another phone but suspect it won't matter until the first patch comes out.   Like I said, battery was bad, setup as new phone, worked great for 2 weeks, and back to terrible battery.  it ***** to loose all my game settings, AGAIN! apple needs to acknowledge it has a problem (not that they will)!

Hi Guys,

I've seen a few people complaining about battery life of the iphone 5 and it getting drained very quickly.

I was wondering what color is your ipone 5? Did you backup from a previous iphone? Which Version was running on your previous Iphone?

At the moment i have no problems what so ever. Mine is running smooth without any problems. I sync with icloud.

I might be able to help.

Regards,

Andre

Black.  Yes restored from iPhone 4.  iPhone 4 had iOS 6.0.

I did a test after exchanging the phone and using two apps to monitor CPU usage and data usage.  With cellular data disabled the battery life is 3 - 4 times longer.  It's "good" but not "great".  I still feel like time that is classified as "usage" should be "standby".  I got about 9 hours usage and 21 hours stand by.

I ran the two apps you recommended and at no time did I see excessive data use or CPU use.  However, a couple times I had to turn on cellular data just for a few seconds to check a map or an exchange rate and the battery drop started again immediately.  No excessive data usage observed other than that it seemed every time I turned on cellular it would instantly register 1 MB even if I did something htat should only use a few KB.  When the battery was almost dead I left the cellular on for a little bit but did not notice any additional data beyond the first megabyte. However, the phone does get warm on the back whenever cellular data is on even if the phone is just idle.   Can the cellular data chip be bad?

I was really surprised not to any excessive data usage or CPU usage.  Doesn't make much sense.

Well, I did ANOTHER complete wipe of the iphone 5, and did not restore from backup.  Worked like a charm, for a while.  It only lost about 8% or so from no usage while I slept (over 8 hours).  Came into the office (not on wifi any longer) and guess what.  was at 30% within 2+ hours.  So I gave it a charge. went for a run at lunch and it had dropped 10% in the 30 minutes it was in the locker, and it was quite hot!  By the way, it is a black 32GB ATT phone.  So basically, if you turn everything off (cell, location, siri, wifi, etc) it will probably work fine, as an etch-a-sketch.  Will take it back again next week and keep trading until they give me one that works.  Resetting the frigging thing to get the battery to work is not something I intend to keep dealing with.  seriously considering going back to the iphone4 that I have that works perfectly fine (kids won't be happy as it was going to be their ipod touch).

Jet, my iphone 5 is the white 32 gig version. Previously I had the black 32 gig iphone 4.

So, I'm on day two of my white Verizon iphone 5, 16gb.  Got to about 6 pm, it was down to 5%, after starting fully charged at 6 am (was in airplane mode for two hours).  Had to charge for 15 minutes, before going to dinner.  Usage 6 hours, 4 minutes, 14 hours, 35 minutes standby.  I did talk on it a bit, used it for directions for 20 minutes, etc.

Buddy got a new ATT phone, he's done about the same, he's at 70%, day two. 

This *****.  Love the phone, but may have to go back to my Razr Maxx with two day battery.  Really, turn the data off?  Why would I have a LTE phone if not to use data?

My final conclusion is that it is 90% due to cellular data, turn it off and that corrects most of it, however I think there are also some background process issues.  The first run through with no cellular data I got OK battery life but not super and I think some of what was classified as "usage" should have been "standby".  Today I'm great, as advertised battery life but it's been mostly standby.  When I started web browsing and things like that I feel it still drops a little on the fast side but not nearly as bad.

So there most certainly is a huge gaping bug with cellular data and then possibly some loose canon processes that get stuck running in the background.  Again though, the weird thing is I can't find excessive data or CPU usage when running programs to monitor it.

Now i'm @ 77% 2 hours 24 minutes usage, 17 hours, 5 minutes standby.

Yesterday I got around 20 hours standby and 9 hours usage but I didn't actually use it 9 hours.

I got an iPhone 5 yesterday and restored from my iPhone 4. I unplugged my iPhone 5 this morning when it was at 100% and finished all its syncing and whatnot.

Right now the battery is at 89%. Usage is 43 minutes. Standby is 1 hr 47 minutes.

43 minutes using up 11% calculates out to about 390 minutes of expected usage time, which is 6.5 hours.

I don't think it's linear though. This "expected usage time" calculation has been going down over time.

What should the expected usage time be?

One hint that helps a little bit: I always put my iPhone into standby manually (press the power button momentarily) after finishing using it. If you are like me and pick it up to check something 100 times a day, that saves about 100 minutes of usage time by not waiting for the timeout to go to standby.

doug

Try turning off your cellular when you're at home or otherwise on WiFi and watch your battery life skyrocket.  I'm getting close to 24 hours standby with 75% battery left.

hi guys

you could try this  tips

1.u could off dignostics and usage

2.off cellular usage when not in use

3. off wifi when not in use.

4.let your battery drain to 0% then charge it to100%.

5.2 click on home button and close your apps history by pressing till it jiggle then delete it .

hope this help

apreciate that u can give me some points,as im new here.

thanks