I know Apple says you don't have to calibrate the battery for our phones, but it seems that since the ios7 update, it's a must. Here's how i do it, and so far it worked, my phone shuts down at 1%.
1. Charge your phone till 100%.
2. Use it until it shuts down. (When it shuts down, try to power it on a few times over the course of an hour just to make sure it doesn't start)
3. Connect it to the charger, shut it down the moment it powers on and leave it there for about 4-6 hours.
4. Power it on and use it normally,
5. Drain your phone, use it until it turns off then repeat steps 3 and 4.
6. Return to your regular charge cycle.
Hope this helps.
Same issue here, but mine iphone 5 has not been upgrade to the new iOS and is still on the iOS6. Today I was using the camera and it shut down with the dead battery screen. I plugged it into the charger to get the phone to power back up and it showed 52% and I was able to immediately unplug the phone and continue to use it. I did see how much battery was showing before it shut down, but it was certainly over 45%.
This is the third time this week this has happened. Don't believe the other two times it happen I was using the phone, but doing other tasks.
I have had the same problem twice in the last three days.
First instance, at 15% reported on battery life, the phone shuts down, and the out of battery need to connect screen is shown. I had to connect to power, and when it came back on, it reported 15% battery left.
Second iinstance was at 35%, same thing, powered down, upon connect to power source, when it turned back on, it was at 35%.
Both instance will not let me turn on the phone without connecting to power.
iPhone 5, updated to iOS 7.0.3.
I was able to find out the issue with my phone. Turns out the battery was depleted. I ran a diagnosis online and the results showed my battery was depleted. Same thing happend when I called Apple Support and they ran a diagnosis. I had to go to the Apple store and have the battery replaced ($79 + tax charge). Naturally, I was just a few days outside my warranty otherwise it may have been free.
I think this is more of an iPhone 5 issue rather than an iOS 7 issue, but the combination of the two seem to be a real problem. This is probably why Apple is no longer offereing the iPhone 5. I had the 3 and 4S longer than the 5 and I never had an issue with the battery.
had same issue today, just for another data point.
40% left on battery (it was reporting)
was taking pictures
it shutdown and locked me out until i could plug into power
as soon as i plugged in, it said it was at 44% power.
this is an iphone 4s.
btw the camera on ios7 is complete death to batteries. i can drain a battery in 2 hours just by leaving the camera on, unused.
I have the same problem every since the iOS7 update. It's ridiculous! It will shut down from 13 % up to 30% and when I try to turn it back on (lock button) it will show the 'need to charge' photo.When I press the home button & lock button though it turns on and shows the battery % only to shut down a few minutes later. I have my iphone (5) for roughly 10 months and it's in perfect condition, never dropped it, not one scratch and it makes me angry seeing little annoying bugs like this that ruin an otherwise great phone. Please Apple, fix this soon!
Definitely add me to this too. Had my phone cut off (multiple times in the last couple of months) showing anywhere between 27% and 38% battery remaining and would not turn back on until I plugged it back into a charger, when it would fire up showing 20% to 40% (sometimes more than the charge showing when it cut off.
Really p****ng me off as its usually in a spot where I don't have a charger immediately to hand and its starting to feel unreliable, which is exactly what you need a mobile to be should an emergency ever arise.
fwiw, i did the full discharge yesterday to see if would be a remedy. i only had the unexpected shutdown once, so hard to establish a pattern.
during the intentional battery drain, i noticed it stopped decreasing near 40 percent for me. i powered off then on again and it showed about 20. so the monitoring or the discharge pattern of the battery itself seems wonky. it also stayed on the last 1% for about 10%'s worth of time -- way too long. so with these efforts i hope it has calibrated -- will try it again when i can and see if it discharges more linearly.
I am having the same issue and I did not see this until the last 7.03 update. It cut out right during Halloween pictures and could not use the phone till I plugged it in to charger for a minute or so. The phone then powered up and lasted the rest of the night, but some priceless moments were missed!
I am having the same issue and have had my phone already replaced once by apple and still same issue. I am not wondering if it is an IOS 7 issue somewhere. It didn't do that before as bad. I know all smartphones can be battery hogs if you have alot running.
I had everything that I don't need shut down and it still did it.
In response to the other posts, I have not had any issue with the battery until the update to IOS7 and I have been using the phone for over a year. I am not suprised that the store would say the battery was bad, the phone thinks it is and shuts down. I do not know what plugging it in does for the phone, but after I plugged it in for just a few minutes it lasted for several hours. it was not that the battery was dead, but how the camera works with the system on IOS7. I do not know if taking a picture and saving it while using the flash cause a large draw etc, but whatever it is the system then thinks the battery is dead when it isnt. The hard part is once you apply power it will go away and there is no way to verify the issue. Even if it is weaker battery it should not just shut off with 20% power and then not work until power is applied. The battery is not dead as it has worked for several hours afterward. I have not used the camera in those cases for fear of losing my phone until I could get to a power cord. I am not aware of it happening twice in a row, but I will test it next time I am near a power cord after it dies. I would also concur, that this is a quick failure for the battery also as the phone is just over a year old.