I would suggest you to try this steps and let me know. Shut the phone off then hold down the power and volume down button (approx. 15 sec). When the boot menu appears use the volume down buttons to scroll to "reboot" and use the power button to select. Phone will reboot back and will be off from safe mode.
Check out a fun infographic that teaches you how to increase storage, enhance security, improve battery life and clean your device.