Not included installation instruction, Not Recommend to install it without any experience.
Warranty:90 days VEKIR is not responsible for any damage caused during installation.
Check the item carefully, as soon as find out there have scratches or damage part contact seller with photo of the damage or scratches).

Remove the battery before doing any replacement to the device

!! Product that has Flex Cable, please try to check the item function by just connect the flex connector to your device firstly, if the item was defective contact seller for solution