Battery drain problem

[amd_2012]

Hi I upgrade my Xperia z1 to. 236 version. After that my phone battery is drain so fast. I did the Sony oc companion rest. Even that still I have the problem. I can't use my phone whole day. Just 8 or 10 hours. Some people say do hard reset from pcc. I did that also. But no result. Please Sony help me.

[LukeG72]

Same problem. After upgrade to .236 the charge falls from 50% to 1% in one second. Software or battery issue ?

[Rick72]

Same problem here...since last december 2015 upgrade battery drains to 0 from different % (20, 40, 50 even 80%)

[franco66]

Help! same problem!! from 70 to 0% of battery

[Criteria]

i suffered suddenly shut down for a few months. Last week i finally make my mind to change the battery.It looks like the battery had swollen cz my back panel pop out by itself.

[stocksypete]

I'm still having limited issues with battery drain. As I'm travelling at the moment I've no access to pc companion to try and repair. Two days ago battery dropped from 80 to 1 as I was using album to view some photos. Not sure if this was the issue as previous times I was either in camera or album?  

I've also been seeing an exclamation mark at the side of the WiFi logo so I think it's having a few problems with that. Turned off WiFi and the battery lasts alot longer so am now thinking the issue is possibly with Google services trying to run in background or simply not connecting

My phone contract is up for renewal soon, and I'm tempted not to get another Sony as I've had so many battery issues with it. It's a shame as it's quite a neat phone