I was working on my iPhone 4S and then stoppehhd it (Not Swithed Off). At this time 50% power indication was there. After a few seconds when I tried
Correct AnswerReset, hold both home and power buttons until the iPhone begins to start, usually takes about 10
[Via:HT2101 It not putting on despite 50 power being . Means when stopped checking my mail and switced it] iPhone Errors questions -> iPhone 4S Questions