Got a new phone for Xmas? Does it take the same size SIM card? If not, you need to order a “SIM Swap” from your network provider which will take a day or two. DON’T CUT YOUR SIM DOWN WITH SCISSORS unless you know it’s a new sim with no extrusions. I’ve cut down 5 sims and 2 of them no longer worked, but I had already backed up the SIM contacts. Choose your provider here to get the details: