Steps to troubleshoot and fix the issue:

1. Check the power source. Is your phone charger plugged into a working outlet?If not, plug it into a different outlet.
   
2. Is your phone battery completely discharged? Try plugging it into the charger and waiting a few minutes before turning your phone on.
   
3. Try a different charging cord or wall adapter. If the cord and adapter you are using are not original, try using the original parts or other replacements.
   
4. Make sure your device has enough memory to power on. If not, you may need to delete some files or applications.
   
5. If the problem still persists, contact your manufacturer's customer service department for further assistance.