Phone keeps charging after plugin off the charger - Galaxy S II Q&A, Help & Troubleshooting

so before 2 days my phone was perfectly fine
and now when i charge my phone, it's charging normaly.
and when i plug off the charger from the phone, my phone keeps charging itself.
and i feel like it's draining my battery faster.
is there any solution for it?

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Got the same problem since the same day.
Phone rarely able to connect to the PC. Battery indicator keeps blinking (in samsung rom) or showing as if it is charged (in CM9). Phone can't be turn off. Usb keeps disconnecting, making me afraid if something goes wrong when I flash anything with odin PC.
I use speedmod kernel (apollo, actually) and the battery doesn't drain. But still it acts as if it is charged when I turn off the phone.
Sent from my GT-I9100 using xda premium

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Had the same problem last summer, I think it's a common fault on the i9100.
Some have been able to fix it by cleaning the usb port, or by gently bending the little piece in there.
That didn't work for me though, had to send it in for repair. They switched the motherboard and usb port.

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so my only way to fix it is by sending the phone to repair ?

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sultanovski said:
so my only way to fix it is by sending the phone to repair ?
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He said:
Muffo said:
Had the same problem last summer, I think it's a common fault on the i9100.
Some have been able to fix it by cleaning the usb port, or by gently bending the little piece in there.
That didn't work for me though, had to send it in for repair. They switched the motherboard and usb port.
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Click to collapse
So you can try cleaning the port on the phone first. Try first with a dry clean toothbrush. If that doesn't work, take out the battery and try cleaning the port with a q-tip and a (little!) bit of isopropyl alcohol. Then let it dry before putting the battery back in. If THAT doesn't work, then you'll need to get the port replaced. You could do it yourself, (I've heard the part costs around $15) or your last option is to send it in for repair.
I wouldn't recommend bending or otherwise moving the little wafer inside the port, however.

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I notice that it will continue for a few %, maybe 2-3. It's because the battery gets warn when charging and still continues to until it has cooled down enough. But I don't notice any difference in drain time on mine.
sent from Bat Country

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ctomgee said:
He said:
So you can try cleaning the port on the phone first. Try first with a dry clean toothbrush. If that doesn't work, take out the battery and try cleaning the port with a q-tip and a (little!) bit of isopropyl alcohol. Then let it dry before putting the battery back in. If THAT doesn't work, then you'll need to get the port replaced. You could do it yourself, (I've heard the part costs around $15) or your last option is to send it in for repair.
I wouldn't recommend bending or otherwise moving the little wafer inside the port, however.
Click to expand...
Click to collapse
how do i clean the port of the phone ?where is that port?

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Are you running any custom roms? If you are that might be the problem.

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sultanovski said:
how do i clean the port of the phone ?where is that port?
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Um... The port you plug the charger or usb cable into? Really the only port on the phone? And clean it the way I already described?