Hi i have just gother a galaxy S2 and i am having the same unresponsive issues when charging either by USB from my laptop or from my mains charger . i also know if someone having the same issues with asus slider. is ignore just a bug with android? should i ho back yo iphone ? i will be ringing Samsung in the morning !!!!
I want to use android not ios but if this continued i will have to revert
I have found that my Galaxy S2 Epic 4G Touch did this with the stock AC cube, and with other,
UNDERPOWERED adapters.
I purchased a 1 AMP generic USB to AC adapter from Best Buy, and 3 original Samsung 700 mA adapters that all work fine. I also have 2 of the 2000 mAh enhanced Samsung batteries which came with a wall/travel battery charger that includes a USB port. When I plugged my phone into this USB port it started acting all flaky, my screen would jump around, and would zoom instead of scroll (like I had another finger on it already), and Swype-ing would enter random characters.
One time, my phone woke itself up, and made 5 phone calls by itself!!!! I thought I had some malicious app installed!!!
It was SOOOOOO frustrating.
Then I figured out that the wall/travel charger USB port was rated for 5 volts at 500 mA output - too low. I use ANY adapter with 700 mA output or higher and it's totally fine. The phone will limit the charge rate, so a higher current adapter is fine. I have a 1 amp car lighter adapter also that causes no issues either.
You have to look closely at that tiny label with the tiny writing, and
don't buy any adapter unless you know this first!
So, I suspect that the original, possibly defective, Samsung cube adapters are not putting out enough power. They are rated for 1 amp, but my phone did the exact same thing with it plugged into it. If I have time, I will test mine to see...
Hope this helps someone else!