Samsung GALAXY J7 PERX, User Manual

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206 Getting Help
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 .
Solution 5 : Is a disabled access point set? To reset
to initial settings:
•
From home, tap Apps > Settings >
Connections > Mobile networks >
Access Point Names > More options >
Reset to default .
Problem : Battery level goes down quickly.
Solution : Are you where signal is weak or have
been out of service area for a long period? Calling
where signal is weak or being out of service area
uses a lot of Battery.
Problem : Cannot install applications.
Solution : Applications cannot be installed with
only a little free space on the phone or SD card.
To check free space, see “Storage” on page 169 .
Applications not supported by your phone cannot
be installed.
Problem : Cannot unlock screen.
Solution : Power the phone on again. If you are
unable to turn the phone off, remove and replace
the Battery, and then power the phone on again.
Data that was being edited is erased after the
phone is powered on again.