Samsung SM-J327P User Guide - Page 269

For Assistance The following topics address areas of support for your phone, including troubleshooting, specifications, account information, warranty information, and customer service contact information. Troubleshooting Check the questions and answers below for troubleshooting solutions for common phone issues. Check Here First Problem: Phone freezes/operation is unstable. Solution: Turn the phone on again. If you are unable to turn the phone off, remove and replace the Battery, and then turn the phone on again. Data that was being edited is erased after your phone is powered on again. Problem: Operation is unstable after a new application was installed. Solution: The newly installed application may be the cause. Uninstall the application in Safe mode. See Uninstall an App. To turn the phone on in Safe mode:  Press and hold the Power/Lock key > touch and hold Power off, read the disclaimer for safe mode, and then tap OK. • After turning the phone on in Safe mode, "Safe Mode" appears at lower left. • After restarting in Safe mode, your phone can be powered on as usual. • Before turning the phone on in Safe mode, it is recommended that you back up important data. • By powering the phone on in Safe mode, added widgets may be deleted. Problem: Cannot use phone, mail, or Internet. Solution 1: Check whether you are where signal is weak or out of service area. Solution 2: Power the phone on again. Solution 3: Is the phone in Airplane mode? To check that Airplane mode is canceled:  From home, tap Apps > Settings > Connections > Airplane mode. Solution 4: Is data communication disabled? To check that data communication is enabled:  From home, tap Apps > Settings > Connections > Data usage > Mobile data. For Assistance 259