[Xperia Z1 General] drsoran2:
Edit:

I've used the "Sony Mobile Battery Test" apk (which they apparently also use in their service centers) to test my Z1's battery (3x times). The battery temperature and charger test passed, but the next test for battery capacity failed everytime. It showed "Reduced capacity" and "fail"!. It didn't even proceed to the final test of internal resistance.

Please see the screenshot!

So there you have it: The fault is not only in my head, there's a real problem and the battery seems to be faulty and now I have the "pleasure" to send it back to where I bought it or directly to a Sony repair center and have it repaired under warranty!

When I enter the service menu and then go to "Battery Health Test" the capacity shows actually as normal, whereas a few days ago it showed 1868mAh instead of around 3000mAh. Confused.

I'm actually quite outraged as the phone was bought at the end of September 2013 and is now barely 14 months old and the battery is already broken!!!! I don't think that this is normal and acceptable!!

Either I'm having really bad luck or this is bad quality control from Sony!

My first waterproof phone and also first phone with non removable battery was the Xperia Z which suffered from the lifted back cover and I had to send it back to amazon and they refunded me my money. I then purchased this Z1 as it was newly released and now the battery is broken and I can't even change it myself without voiding the warranty plus the bottom loudspeaker grill is becoming loose and the vibration motor makes squeaky noises.

3 problems in one phone!

So disappointed. When they have fixed it and send it back to me, I'm probably going to sell it as my trust in Sony is almost gone. At least the Z1 stayed waterproof all the time.

The worst part is: I'd like to buy a smaller phone in the 4.3-4.7" range which is waterproof, has a removable battery (not going with non removable again!), microsd and current technology. There are exatly ZERO options.

The S5 mini is too slow, not enough RAM.

The S5 is too big.

Plus they are both Samsungs. Everybody has a Samsung and they are ugly.

The Xperia ZR is too old.

I have to make sacrifices of either giving up waterproofness (which I don't want to) or a bigger size (which I don't want to either, but this is probably a better compromise)

Thanks for the information.

Did you use better battery stats or wakelock detector and was there something unusual? For me there doesn't seem to be a reason for the battery drain.

Meanwhile, my battery was fine again for about 2 days (or at least a lot better than before). I got 24 hours with 3 hours screen time.

What have I done to achieve this? Actually nothing or I don't know. I've booted into TWRP to wipe the battery stats but couldn't find them, then tried to boot into CWM but it didn't load, only a black screen. Then I forced the phone to restart and all was good again.

Very strange. Later I found out that wiping battery stats doesn't do anything at all.

But now it has become worse again. Last night I've lost 13% in 6 hours and then again 10% in 4 hours!

Currently I'm using the Sony Mobile Battery Test app and see what it brings up, if anything at all.