same, mine also white screen after like 18 months, so ended up fix it with RM450 and sold it off dirt cheap. According to the technician he can only able to provide 1 day warranty after the repair, Hence, better get rid of it before 2nd wave ......

Lucky you, i didnt manage to send to apple cuz all my important info is in the device and is my daily phone, so ended up send to 3rd party to get it fix within an hour (of course have to pay), haha.... they actually so called bypass it then the screen back to normal. But if can get the whole screen replace at apple's cost, then should keep the ip13pm, is a nice phone and doing pretty well all the time