Battery after JB

[heyyu]

I wasn't planning on doing a hard reset on my phone, but somehow I managed to do it, don't ask me how. But on the positive side, my battery life is much better now. After 11 hrs of use, I still have 34% battery life left. Before the hard reset, my phone was lasting 4 hours before it died. I also made sure that I only reinstalled my most often used apps, so I don't know if I had a rogue app causing my battery drain before the hard reset.

 

[Love Divine]

Well, after all this time with the JB update, battery life has noticeably decreased from ICS for me, it's safe to say.

Checked my usage (20 hours off the charger) and Camera was using 45% of my battery. Haven't opened the app in days. Last rebooted when it came off the charger. This has been happening over the past two weeks. What gives? I'm gonna try a factory reset soon.

 

[bdecastro77]

What do I need to do for a factory reset?

From my EVO LTE

 

[Cyrene]

What do I need to do for a factory reset?

From my EVO LTE

Sometimes there are glitches in the wifi when downloading updates, causing problems. A factory reset can get rid of those.

Sent from my EVO LTE using Tapatalk 2

 

[So Cold]

With all the traveling/navigating and everything I've been doing lately I can't give fair quantitative values to battery life but I can say that for the last few days I've left power saver on with cpu power and display checked and it seems to be helping out without sacrificing too much performance.

 

[jwbekens]

In the hope that this helps someone, I found that my gmail accounts were both corrupted and caused massive battery drain. Before the JB update, I would go 8-10 hours at work (on wi-fi for data) and my battery only drained to 50-60% at the most. After the JB update, the battery drained to 30-40% left after 8-10 hours using Google Now with a lot of cards. But suddenly this week, my battery would drain down to 10% within 5 hours. So I read this thread and got Carat from the Play store. My phone was constantly synching. I have one Microsoft Exchange account, 2 gmail accounts, Verizon, FB, Linkedin, Watch, and a few others. Most everything is set to Smart Sync. According to the Power graph, the device was almost constantly "awake." I tried turning on and off the Connections Optimizer. I turned wi fi on and off for hours at a time to see if it was slow data rates or not. I played with the Power Saver. I did simulated battery pulls with the fast boot unchecked. I turned off Google Now and location memory. The battery temp was running 97-102F. Very uncomfortable in my pants pocket, to say the least. Still the battery fully drained in 5 hours.

I then logged into my gmail accounts on line. No problems, but both accounts somehow had more than 100 duplicate contacts, in addition to the usual 850 each. So I merged the contacts on each account separately. I removed the accounts from the EVOLTE from Mail and from Google and from Gmail. I then re-installed them. Carat said Power optimizer was a Hog. It did not detect any other problems. So, today, with Google Now turned back on, with Location memory on, everything is synching just fine, and now after 9 hours of use, I am at 60% battery remaining. The problem was synching continuously to both of my Gmail accounts. And it seemed to be the contacts got corrupted. I will update if Carat finds something else that is causing problems. Even with Google Now and Maps, Norton Security, {onX}, Evernote, and FB and others running in the background, my battery life is just fine. I have >200 apps installed, too.

Check your Gmail contacts and calendar and tasks for corrupted data. This actually happened on my old Pre. Somehow I ended up with 23,000 contacts and synching those will definitely drain your battery. This time it was just a few hundred extra.