Hi, May be u need to try with different battery due to poor battery or troubleshoot your device by turning off the phone,Press and hold power key and vol+ key simultaneously for about 5 to 10 seconds until the screen goes to black and several blue sentences will appear.reboot system now,apply update from SD card,wipe data/factory data reset,wipe cache partition.Choose reboot system now after few seconds the phone will reboot normally.Before you perform troubleshooting backup the information to SD card.

Hi Zilda. I just found out that this is a known issue with ZTE Fury. A lot of ZTE Fury users has been having the same problem as you and there is currently no fix to this. If you're still in the 14-day trial period, you should return your phone and get something else. If you're beyond the trial period, the only hope you've got is if ZTE or Sprint releases a software update that will solve this issue. I hope they do. Good luck!