1) Make sure you put the SP in a room that is not ventilated with no fan switched on. This is to prevent dust particle in the air from landing on your screen.

2) After putting the SP. Let the SP rest for a day or two for the glue to cure.

3) Put on the case after that.

4) If you skip (2), you might end up with the SP edge lifting when in contact with the case.

Real men put their own screen protector...

Believe me the phone store staff don't like to do it for this phone model due to the curved screen. Before getting my Spigen SP i was using my phone for 1 whole week without SP. Went to a store to put on 1 and end up the poor dude wasted 2 SPs due to edge is always lifting.

Is there any way to make data always on even when receive call or when i call out...