Currently Being ModeratedJan 28, 2013 7:19 PM (in response to Mac OS XP)
Has anyone else noticed that when fully charged the iPhone takes a while to go from 100% to 99% and from 99% to 98%, like it has a lot of battery and it's not draining fast? But then it can drain from 30% to 20% or 20% to 10% much faster?
Maybe the battery sensor needs calibrating. Leave the phone on, running an app that draws power (such as a flashlight or movie) until it shuts off, then charge it to 100%. You should do this every month or so.
Currently Being ModeratedJan 28, 2013 7:22 PM (in response to Mac OS XP)
Also when charging, it charges up to 30 percent really fast, but it takes a long time to go from 90% to 100%.
That's normal. The battery must be charged slowly when almost full or it can catch fire.