My phone stopped working.. its completely dead.. it refuses to turn on
Please suggest me solution to restart my phone..
The Samsung Galaxy S II is a smartphone designed, developed, and marketed by Samsung Electronics with Android 2.3 "Gingerbread."
Put in a known good and charged battery.
If phone starts but new battery doesn't charge, you need to replace the charging port.
If phone starts and new battery charges, you need a new battery.
If it does not restart, it could be a number of issues, but begin with the above to rule out the simple issues first.