Try on after restarting the device Please do these additional suggestions also Verify that u have inserted working sim... if so check through the sim settings if u have enabled that particular sim upon the device also check that sim on other device also if there is range of network is showing or not.
are using new Sim ?? If yes then activation might be pending..If Activated old sim then enable Aeroplane ✈️ mode and disable it again after 15-20 Seconds..Still not working then switch off & remove Sim & again re insert Sim & restart your handset..See it works or not ??
