Data connection drops upon losing wi-fi connection
When I disconnect from the WiFi I have no 4G/LTE data. The only way I can get it back is by switching airplane mode on and off about 5-7 times then it reconnects properly. I have data enabled, roaming enabled. I used to be with a different service provider and this didn't happen.
Furthermore, my sister who is visiting me has the exact same phone but a different service provider and this doesn't happen to her.
Any help would be appreciated.