I'm having a samsung galaxy s2 gt-i9100 and it's out of warranty. My problem is that it shuts down whenever it is not charging. It is perfectly ok when it is charging but shuts down when it is removed. When it is unplugged it will stay on longer if I turn the power saving mode on but when I turn the data connection on or when I try to call someone, it shows there is no network.The phone turns off if I put in a sim card and an SD card simultaneously, so I'm not using the SD card slot now.
Not a software problem because everything is alright when it's plugged in. I tried changing the kernel, rom but to no use.
Can anyone help me fix my phone. Any help is really appreciated.. Thanks in advance..