About charging

[Dontlookatme]

hello dear members of forum.I have joined this forum to ask that question.When I pulled off my iphone4 from charge it has a battery level of %96(I'm sure!!!!)than I looked at it again 20 minutes later but it has a level of %98 what is the main reason?(sory for grammer mistakes I'm not American or English.(((I'm sure about numbers)))

 

[Gregoris]

hmmm only after 20 minutes??? what do you do with your iphone in that 20 minutes? what apps do you have open? is it jailbroken?? full details please..

 

[Dontlookatme]

IPhone 4 jailbroken by jailbreakme
I had run none apps or sbsettigs etc.
It was locked.