My phone was at first turning off by itself and coming back on (restarting). Now it is off completely and won't come back on. It is fully charged. It hasn't been dropped. It is protected by otter box case. How do I or can I troubleshoot this problem?
Thanks for reaching to us with your issue; sorry to hear you're having this issue with your device.
If your device is no longer powering on, it would be advisable to have it examined by a repair center. You can find one here: http://bit.ly/18BdA4q .
Please follow up if you require further assistance after visiting the center. Thanks!
Sprint Social Care Team