For T-Mobile it’s 40 days ... that the iPhone is able to connect over the new network. How to update an unlocked phone without the SIM card If you’ve requested an unlock from your carrier ...

In October 2024, while preparing for a trip to Hawaii, a big problem suddenly occurred to me: the UK SIM card in my phone ... UK network (EE, Vodafone, Three or O2), US carrier (AT&T, T-Mobile ...