Turn off your device and plug in your Charger. Wait for a few seconds, and then you should see charging signs. Smartphone Charges after turning it off and plugging it in. If your phone is charging while turned off, wait for it to charge completely, power it on, and finally try to charge it again.
2. Reboot your Samsung Galaxy C9 Pro to safe mode and make a call. If your phone signals are stable, which means the problem with your Samsung Galaxy C9 Pro. If there is any third-party app, witch causes dropping calls, we can stop them from running by enabling safe mode. Because safe mode stops all third-party apps from running.
A warning message will appear to avoid hard reset the Samsung Galaxy C9 Pro by mistake. Use the Volume Up and Volume Down keys to select the "Yes" option and press the Power button to activate the option.Does factory reset on SAMSUNG Galaxy C9 Pro delete games? How to watch online movies on SAMSUNG Galaxy C9 Pro; How to get streaming services on SAMSUNG Galaxy C9 Pro;Troubleshoot your Samsung Galaxy C9 Pro’s dark screen and blue flickering lights: Step 1: Attempt the Forced Reboot method. In the event that your Samsung Galaxy C9 Pro has a black screen and blinking lights at the top of the screen, it may simply be a sign of a system crash.
How to open up Developer Options in SAMSUNG Galaxy C9 Pro? The device must be turned on, so hold down the Power key for a short while.; In the next step from Main Menu find and select Settings and open About device.
Use Volume Down key to cancel ( Restart the device ) Hard reset Samsung Galaxy C9 Pro SM-C9000 using External Keys ( remove your forgotten pattern unlock ) In Recovery Mode, use Volume keys to select wipe data / factory reset; Press Power key to confirm; Use Volume keys to select Yes — delete all user data; Press power key to confirm
