
Originally Posted by
greenman
...if having problems with ICS you do need to go into Recovery Mode to factory reset and clear cache.
This will clean up your ICS and will improve battery life.
If no other problems with your ICS go to 'battery'
Otherwise, first of all:
1. Go to Settings > back up and reset and tick
Back up my data
Automatic restore
You can also connect to Kies and take a backup there for extra security and to save contacts and sms.
2. Press and hold volume up + Home button + Power button until in blue Recovery screen
3. Use Volume key to hilight 'wipe data/factory reset' and power button to select
4. Use Volume key to hilight 'wipe cache partition' and power key to select.
5. No 'Reboot system now'
6. Your phone will be as purchased, but with ICS, so you will have to put in your WiFi password, and Google address once more.
7. Your apps will be installed via the google restore, so give it time.
Battery:
To improve your battery you need to run the phone until it turns itself off.
Now with phone off, fully charge.
Run phone again until it turns itself off and recharge in 'off' mode.
This will reset your charging chip.
I would advise doing both of above, but understand that factory reset is a big step so can do later if no improvement.
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