Don't know if to categorize this as technical problem or feedback or something. My mobile's Samsung Galaxy S 2 Plus GT-i910P. From what I gather this 2013-something phone doesn't have the recent quickcharge support nor I have the charger for this feature. Just standard 5v-.7a charger. But recently I've noticed that if I charge thr phone in its >20% and restart the phone, the charge just jumps to more than 50%. Quickcharge for free? Or is it display/battery read problem? BTW the more than 50% doesn't dip unnaturally just after a heavy load (not a display problem?). The phone's battery drains at normal rate. any thoughts? BTW android is stock (samsung stock) 4.2.2 jelly bean and the phone is rooted.
@redwan hasan , @Swapnil or someone?