question mark in a circle cannot turn on phone

Hello again!! Today I have change a new battery but the problem is still there. What can be the cause of this issue??
Thank you very much
 
Hello again!! Today I have change a new battery but the problem is still there. What can be the cause of this issue??
Thank you very much
Hi, if still having a issue then I recommend taking to repair center could be something different like motherboard but needs to be professionally checked .
 
I took the back off and moved the battery a little bit without removing it and it started charging