hi guys, i just purchased a new iphone4 and it comes with 60% charged battery. wanna ask for the first time charging it how long should i leave it to fully optimized my battery life?

my friend told me to on the phone, charge it up with wall socket, then off the phone. leave it for 8 hours. on the iphone then leave it for 20 minutes before stop the charging. is this the correct way?

thanks in advance =)

Hi guys, wanna ask is this normal for my iphone 4, version 4.3.3 jailbroken. Seems like the battery is getting weaker but im not too sure how to test it.

Bought my iPhone on March 2011, few times charged overnight.

This is with all the push notifications and location ON. WIFI most of the time ON but not cellular data and 3G.