[XPERIA X10 General] phillcX10:
X10 Battery LIfe Issue Solved (for me!)

My first post here, and normally I wouldn't have bothered with another site registration, but the information I found on this thread finally fixed my X10 battery life issue, so I thought I would share my experience with others.

I've had my X10 for about 4 weeks now and I was getting really, really poor X10 battery life. Usually at around the 12 hour mark, the phone would either have turned off due to flat battery or at least giving me 5% or 10% battery warnings, depending on my use throughout the day. This was totally frustrating. I'd generally unplug the phone at around 7am, and it would be flat before I was even home from work in the evening.

I had tried all the suggestions:

- Let the phone discharge completely 5 times

- Turn the phone off after full re-charge, then back on.

- Wait a few weeks, for improved battery life

- Installed various auto-kill apps, to kill Moxie Mail and Timescape

- Turned off Wifi at all time when not needed

- No auto sync with anything.

- Reduced screen brightness

- Reduced time to screen sleep

- I even had two weeks in the US (thanks volcano ash) where GPRS/3G data was always turned off

None of this seemed to make much difference. Maybe small incremental differences, but it was hard to tell as the amount I used my phone daily differed. I was starting to think this was the worst phone decision I had ever made and I was stuck with it for 18 months, or had an expensive route to follow.

I have now done two things, read about on this thread, that has made a massive difference.

1. Reformated SD card. Settings -> SD Card & phone storage -> Unmount SD card -> Format SD card

2. Factory data reset. Settings -> SD card & phone storage -> Factory data reset.

I'm not 100% sure which one has made the difference, as I did them yesterday both at the same time, but I think probably "Factory data reset" was the winner. Needless to say, this deleted all data on the phone. That's all installed apps, all contacts, all photos etc. So save anything you don't want to lose.

Anyway, I did this yesterday and now have the following stats:

Time since unplugged: Almost 27 hours

Battery life remaining: 33% (estimated from looking at the battery icon)

Regardless of whether I really have 33% remaining, just to have anything remaining after 27 hours is a massive improvement.

What's eating my battery life?

Cell standby: 52%

Phone Idle: 32%

Display: 6%

Android System: 5%

Voice Calls: 4%

WiFi: 3%

I've probably made about 50 or 60 minutes of voice calls since the last re-charge. Sent approx 30 texts. Surfed the web with Wifi for 30 minutes.

I have not changed any of the phone default settings. Screen brightness is as default. GPRS/3G data is always on. Screen sleep is as default. I'm not syncing with Google or any other service though. I have not installed any auto-kill apps, so I assume Timescape and Moxie Mail are still running in the background. GPS is off. I do tend to turn Wifi off when not in use.

Next charge I'll try turning more things on - GPS all the time and Wifi all the time - to see what happens. Then I'll try all the other tweaks on the next charge - reduce screen brightness, reduce time to screen sleep, Wifi auto off in sleep mode, some auto-kill app for Moxi Mail and Timescape - just to see how long I can go. Won't be too scientific though, as I will still need to use the phone for calls and texts etc.

Anyway, there's my story. I hope it helps someone. My biggest disappointment with the X10 is now fixed, or at least seems to be.

Next job, fix keyboard and wish T-Mobile had a better network.