ZTE Z981 on turn on it from T-Mobile

Aug 22, 2018
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It was charging all night and worked fine for the first hour or so, but then it randomly turned off and won't turn back on. I tried holding down the Power button for 10 seconds and that did nothing. I tried taking out the battery, but this model won't let me remove the battery. There's no visible damage to the phone or the battery. I tried charging it again. The charging light won't come on and it's been on the charger for at least 15 minutes now. Still no signs of life. Any suggestions?