I have promis I'll come back with details about the battery autonomy, so here's how long the battery of the iPhone 4 terminal owned by me lasts (it should be mentioned that I didn't have time to do a full recharge cycle). So, the last time it had 100% battery percentage was a day and 7 hours ago, but in the meantime I "gathered" 4 hours and 40 minutes of use: talking on the phone, surfing the Internet via 3G/WiFi quite a lot , played games, watched movies, installed applications, worked through the system. On the 3GS in the same conditions I would have reached 4 hours and the battery was close to 0, so from my point of view the battery in the iPhone 4 is much much better than the one in the iPhone 3GS, and I for one am extremely satisfied with the change made.
After I do 2-3 cycles of complete discharge and recharging I will have an even better autonomy, practically Apple recommends that you make such clicks monthly to keep the battery in good working condition and to have a good autonomy.
UPDATED : Before the phone hangs up, the statistics look like this. 6 hours of intense use represents a 50% improvement in battery autonomy, and I repeat: I am extremely satisfied with the performance of the iPhone 4 battery.
