Hey everyone. Have you had this issue: ZTE Zmax Pro Z981, new battery - tests ok. New charge port installed. Phone will not boot, or stay running without cord plugged into wall outlet. It will run with cord, but will not charge, and battery indicator stuck at 50%. It does not respond or charge when plugged into a computer. I've left it for hours plugged into wall outlet and computer. Factory reset would be last option only.