There is a purple line on the mobile display, just changing the display will fix it. The back glass cover is cracked, this is not a problem, you can change it if you want. The current market price of the mobile is 39 thousand taka, I will sell it for 8 thousand taka. If you want to fix the display and sell it, you can sell it for at least 20-21 thousand taka, it's your choice.