Wall mount for Galaxy S2 with power case Free 3D print model
The power case makes the phone much larger and heavier. It also means the standard cases don't fit.
If you have a S2 without the power case this mount will be way to big - scaling it down a little may work but that is an exercise for the reader.
There seem to be more than one model of case so YMMV. What I have is called "Samsung Galaxy SII 1600mAh Power Case".
This started as a belt mount but I've done a wall mount first.