Need dead Nokia 107 (Keypad to replace)

Hi, I have a Nokia 107 whose back button is physically broken so need a way to replace it. I was thinking to get a dead set and replace its keypad. Anyone have any idea what else I can do? Should I simply get it repaired from a shop or have a keypad ripped from a dead set and replace it.

If anyone have dead set in Lahore and want to give it to support my DIY then he is welcomed.

Thanks.

Just go to any mobile repair shop it can be replaced for less then 100 rupees

Instead of replacing anything the shop guy just repaired it in 100rs …