28-12-2021 21:28
Hi, does anyone know why I can’t make or receive calls while visiting the USA?
28-12-2021 21:32
1 - Reboot phone.
2 - Manually search for a different network
3 - Check with O2 for any roaming bars.
If you message O2 on Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG) , they should be able to help you with this.
31-12-2021 14:37