Public Mobile only works in Canada and the United States (with the purchase of roaming add on). You can not use your Public Mobile in any other country. If you wish to use cellular services while you’re in another country, you can look at https://www.airalo.com/ for affordable data plans and then download an app like Fongo and pick a local number to where you currently live. They do however charge for texting. TextNow is free calling and texting. You can use both of these VOIP programs via WiFi or on a data only SIM card.
If you only need data and your phone support esim, you can buy a plan at any esim provider like https://maya.net/ and download an esim card to your phone. esim makes data on travel extremely cost effective nowadays.
@Fahmida1 since PM does not offer roaming in UK, you have to arrange other ways to receive OTP. Email is an easy option but not the best. Authenticator app is better
