Imoved to Virgin because my family could get data coverage in the Dales and I couldn't. My phone is Galaxy S20 and much newer than other family members. My 4g vanishes at the nearest town to our caravan but they get it all the way to the caravan. When I first installed the sim card I didn't get the texts with data and mms settings. I have since added them in manually. I've checked that they're the same on my families settings and they are. Why is my coverage so poor.