We have had several requests on how to remove the back cover on the nokia 515.
Not the usual standard of removing a cover but here it goes.
1 Sim re tractor tool as its known mostly for.
2 Your 515
3 Insert sim re retractor tool into hole at bottom of phone.
4 Push gently until the back pops off slightly,it will be stiff as its new
5 Put the bottom rounded end of the retractor tool in between gap of backplate and device and gently twist.