an hour ago
48m ago - last edited 39m ago
48 is owned by Eir and uses the Eir network.
Tesco Mobile is a separate virtual operator that also uses the Eir network.
Some phones can misidentify MVNOs (Mobile Virtual Network Operators) and show the wrong name.
If your APN settings are configured correctly and it shows Tesco instead of 48 then that's just a display name issue and doesn't affect connectivity.
If your APN settings are configured correctly but you are still having issues with certain connected apps then it's likely to be some issue with your phone settings or app permissions.
If you can try your SIM in another unlocked phone then it might clarify matters further.
Another option is too try a replacement SIM in case that makes any difference.
What exactly do you mean by "YouTube is a little sketchey at times"?
What happens with other apps that can't connect ?
Any error messages?
If you need to contact 48 support about this then see the links in my signature below.