Hi, a bit convoluted but simple in the end - I think.
I got a new phone on idmobile with a 100gb SIM. I put the SIM in my old phone and gave it to my daughter as her O2 contract was up. I have my old SIM in my new phone, my contract is up in June and I plan to go for a SIM only upgrade on my contract. Do I will have my new phone with my old number on my new SIM, my daughter will have my old phone with the SIM that came with the new phone. I hope that kind of makes sense.
The issue is, the new SIM is not giving 5g on my old phone only 4g. I know that the phone with an idmobile SIM works 5g as when I was using that phone with my current idmobile SIM it worked fine.
Why would the new SIM not give 5g?
I've been through all the settings on the phone and they are correct.
I’ve also checked for coverage.