Hello friends, I want to ask you something about charging my iPhone. When the voiceover on, and I charge my iPhone and it reach 100%, I did not unplug the charger for my iPhone for a while. Because VoiceOver said on the charging indicator that 100% battery powered charging . After 10 minutes or so, when I touch the indicator of the battery, it's said: 100% battery power on AC power. What is the difference between 100% charging and 100% on AC power? Thanks for your reply .