Question: how to get ps4 out of safe mode without usb cable?
Answer: 1) If your PS4 system is on, please turn it off: press the Power button on the front panel of your console.
4) Press the PS button on your controller.
1) Restart PS4.
This option allows you to get your PS4 out of Safe Mode, and reboot your PS4 system normally. ... 
2) Change Resolution.