Network Switched notification

[BALDRIC8]

I keep getting a message saying Network Switch Detected and I lose Mt BT network connection, followed by lots of dubious ads. Any ideas? #network 

[Pugs1957]

Is this wifi or cellular connection? Try clearing system cache as the dubious ads may be browser connected.

[AndrewL]

@BALDRIC8: Try restarting the device in Safe Mode, as this will disable all third party apps and help to determine if the problem is stemming from an external source. Press and hold the Power button until the 'Power off' prompt appears on the screen then release > Touch and hold Power off until the 'Safe mode' prompt appears then release > To confirm, tap Safe mode > With Safe Mode enabled, ensure Airplane Mode is turned off. If the network switch/adverts don't occur in Safe Mode, restart the phone as you would normally and delete any recently installed third party apps. 

[BALDRIC8]

Cheers both of you. Samsung and Google browsers now OK after Safe Mode restart. Re-enabled Chrome and the problem reoccurred. Have now disabled Chrome. Many thanks for the advice.