First and foremost, it needs to be a legitimate ... Power down the phone, then replace the old SIM card with a SIM from a different network. Check that the iPhone is able to connect a phone ...

The first step, however ... Most devices just have a single SIM card slot, but some might also have a spot for a MicroSD card and/or another SIM card, so add, remove, or swap any cards as needed.

But how does it all work? Here’s everything you need to know about these switching SIM cards. rSIMs are being called the first “resilient SIMs”. The tech is here to save the mobile connectivity day.