I get this message all the time when entering the US. My subscription includes US roaming txt and calls. No worries it works. Just make sure automatic provider and roaming was turned On.If speed is the issue, it might simply be the coverage of 5G for...
In this particular scenario, I've been lucky (using a physical sim) to power off the phone and remove my sim.Powered on.Reinsert sim with roaming ON selected. It took a few minutes but it settled on AT&T with a stable connection with data.Phone was a...