Can u take the back part of a (samsung galaxy s6)

Solution
If you can, there will be a very small slot, into which you insert something preferably plastic and twist it unti you can get a bank card into the gap and ease it all round the device.

My old Galaxy 4 has that slot at the top but my wife's more modern one - probably a 6 - is on the right hand top corner just above the power button.
If you can, there will be a very small slot, into which you insert something preferably plastic and twist it unti you can get a bank card into the gap and ease it all round the device.

My old Galaxy 4 has that slot at the top but my wife's more modern one - probably a 6 - is on the right hand top corner just above the power button.
 
Solution