iPhone 4s doesn't charge to 100%

joshuah006 wrote:

iPhone 4s on charge all night.

5am = 100%

Phone asked for password for iCloud backup - entered and backup started.

iTunes wii sync started

7am = 97%

In plugge and plugged back in

7:06am = 100%.

So, is iCloud interrupting the charge cycle?

I have to retract a little bit of my last post. After 5.0.1 if I leave wifi on but set iCloud backup to off my battery % will be 100 in the morning when I take my 4S off the charger. However if I set iCloud backup to on with wifi on the % will be less than 100 in the morning. So for me it looks like the issue is related to iCloud backup. A related issue is that when I go into Settings to turn off iCloud backup off the Settings app crashes. This will happen several times and if I check the backup setting it will be on. After a few attempts the app doesn't crash and the off setting sticks. It almost looks like the phone really doesn't want you turning that backup off 🙂

Hmmm... I would think the same.

My first 4S - fine, returned for factory blemish after a few days.

Second 4S on 5.0 - fine, battery life shorter than original 3G but same as first 4S not as bad as people were reporting.

Second 4S on 5.0.1 - updated 2 days after release, no change to battery life, everything seemed fine. Thursday of this past week, experienced rapid battery loss despite using the phone less than normal. Recalibrated the battery on Friday and it seems find. Plugged in (@67%) last night and this morning it was at 96/97%.

Performed a soft reboot 10-15 minutes ago and am at 99% now.

When 5.0.1 first came out my 4S was charging to 100% and staying there until I took it off the charger in the morning. So I thought this had fixed the issue which I guess it almost did, battery life overall is better. However prior to 5.0.1 I had turned off several items in Location and Notification centers in an attempt deal with this as well as possibly extend battery life. Since the battery was staying at 100% after the update I started turning some of those things back on and realized that the less than 100% condition was back.

So I've been playing with the things that I had turned off. I've left iCloud backup off thinking that was the main culprit but it continued even so. Now, as before, the issue only occurs for me when wifi is on but after 5.0.1 even with wifi on it seemed resolved until I turned some of those settings back on. A couple nights ago I turned off the Weather widget in Notification center, since then the battery % has been 100 each morning. I'm going to try turning iCloud backup on again to see what happens but it looks like that Weather widget had a big effect on this but there may be others.

I am now seeing the same thing happen here on my iPhone 4S. If I disconnect and plug it back in it gets back to 100%, but I've found it plugged in in the morning after over eight hours of charging with less than 100%. I've experienced it twice so far.

Just found this thread after experiencing the exact problem described by others here for the first time. I've owned my iPhone 4S since October 14th (it's now November 27th). The entire time I've owned this phone I've experienced the fast battery draining issues notorious on the 4S, but I had, up until now, never had it not charge to 100% overnight. This morning I woke up to find it charged to just 93%. After reading through this thread I unplugged/re-plugged it into the wall, and as others have noted, it quickly charged to 100% again.

The only thing that is really different or notable about my situation on this charge compared to the past is that we just returned from a short 3 day trip where my phone had not been connected to my home wi-fi network. During the trip I had been connected to wi-fi (elsewhere) every night, however, and the battery reached 100% as usual.

My wife has an iPhone 4 (not S), and she experiences none of these battery issues. I keep all of our software updated to the latest versions.

I thought I'd chime in, just in case someone from Apple actually reads these posts. I think all of the examples are within the same theme. I got my 4S about 6 weeks ago and noticed no issues with regard to the battery or the charge. I plugged it into my computer via USB every night and, in the morning, it was always 100%. I was on and off many other networks over the past 6 weeks, including travel to and from the US from Canada where I now live. Still, it always charged in the same way and always to 100%. I went to California for the Thanksgiving holiday and here is where the short charge started! When I get up in the morning, it is charged only to 97%! And, this is so whether I charge on my computer or in the wall. I am connected to someone's WiFi here, but not sure that makes any difference.

I have had my iPhone 4 since about August and never had the problem until last night. I let it charge for about 8 hours as I do every time I charge it. It has always been 100% when I woke up, but this morning it was at 97%. So I let it charge for about 20 more minutes and went back to check on it and it was at 96%. I just updated to the iOS 5.0.1 about four days ago and this was my first encounter with the problem.

Well at first I thought 5.0.1 had corrected this on my 4S but it has now reoccurred several times. Then I thought I had it narrowed down to one or two settings and/or iCloud backup, well that was wrong as well. The only consistent factor for me is wifi on or off. With wifi on overnight the less than 100% issue may or may not occur, but with wifi off it never occurs. Before 5.0.1 it always occurred with wifi on, now it's not as consistent, might occur might not. But before and after 5.0.1 if wifi is off it never occurs.

So for now I'm ignoring it, if I want iCloud backup to occur I'll leave wifi on if not I'll have it off overnight. I've wasted too much time trying to deal with this. I assume Apple will get this sorted out at some point. For what it's worth this has never happened on my wife's iphone 4, only on my 4S.

I'm having the same problem again. My phone charges to 97 percent. I thought maybe using the Battery Doctor app was causing problems, but I deleted the app and my battery issues continue to happen. It worked great after I took it to the Apple Store. I really don't think O should have to take my phone in every month for a battery check.

Does this indicate that the not fully charging problem is hardware: Several times I've powered my iPhone 4S down and left it charging. When I've powered it up (24 hours later), it's still not fully charged.

In other words, even with the iPhone 4S off, it's not reaching a 100 percent charnge.

Even when completely powered off, my iPhone 4Ss doesn't always reach 100% charge. I'll plug in my fully charged iPhone 4S, confirm that it's a 100% battery, and power it down. Twelve or 24 hours later I will have 98% or less. Again, that's with the iPhone 4S starting at 100% and being plugged in while off.

I've had this problem the last 2 mornings. Plugged in all night to an AC wall adapter and it doesn't charge to 100%. I wake up and it's at 94%. I'm gonna try recalibrating the battery. My icloud back up is off by the way, but wifi is on. Hopefully apple techs read this and are working on a solution. Software is up to date as well.

Smash1031 wrote:

I've had this problem the last 2 mornings. Plugged in all night to an AC wall adapter and it doesn't charge to 100%. I wake up and it's at 94%. I'm gonna try recalibrating the battery. My icloud back up is off by the way, but wifi is on. Hopefully apple techs read this and are working on a solution. Software is up to date as well.

Your situation may be similar to mine. Try turning wifi off at night for several days to see if this recurs. For me prior to 5.0.1 it always happened with wifi on. Now it's only occasionally. Something did improve. However just as before if wifi is off it's always 100% in the morning. From my experience and from what I've read here recalibrating the battery does nothing or if it does it's only temporary. After 5.0.1 came out I thought this was fixed because for several days wifi was on and it was at 100 in the morning but then it recurred. But again with wifi off it never happens to me.

My battery does not get up to 100% after a full nights charge. I'm gonna give the turn off wifi solution a try and see if it works. I'll report back in a week or so. Hopefully Apple fixes this bug in their next patch, turning wifi off every night to get a full charge is going to be extremely tedious.

I entered this discussion when I was traveling and could not get my phone (4S) charged to 100% when left in overnight. It always got there if I re-charged it during the day. I let it go down to almost nothing and when I charged it the next time, and thereafter, it is not charging back to 100% all the time.