How to fix not registered on network problem duration. Select your your sim operator 6. How To Fix A Samsung With No Registered Network Galaxy J7 Star Metropcs Phones Sm J737tzsatmk Samsung Us Galaxy J7 Samsung Support India How do i manually select a network on my samsung galaxy device. How to register network on samsung j7 . Galaxy j7 glass only. Choose mobile networks if your device is running android lollipop you will need to choose more networks then mobile networks 4. The device will searching available operators xyz 5. Restart one time your device. Go to setting connections more networks 2. Register your samsung product to get faster tech support receive helpful information and opt in for special promotions. You can see your registered operator in standby screen. From the front screen tap apps. How to change network bands...