Chosen Solution
hello I was wondering if yall can help me . I have a iPhone 5 and I was gonna buy a iPhone 6 plus and I put my sim card in the iPhone 6 plus to see how it would work and I took my sim card out and put it back in to my device the iPhone 5 and now it doesn’t work I can’t send messages or anything
Basically what Imad Knight said. Also you may want to try toggling airplane mode off, the back on
Hold the home and power for a while button to hard reset and see if that helps. If not go into settings-> general -> reset -> reset network settings.
