Iphone no sim solutions. if your iphone is encountering no sim on the screen this can be a major inconvenience if not resolved quickly. below you will find various solutions that will hopefully put you iphone back to its normal status.. Just tried this on my iphone 4s (which i’d like to hang on to for as long as i can since upgrading means saying bye bye to low priced unlimited data) it worked like a charm!. To fix this, turn on the airplane mode for about 20 seconds, reset your network settings and then take out the sim from the back of iphone, place it back in after 5-10 seconds wait, turn on your iphone and it will do the network settings on its own..
3. switch off your iphone. 4. after about 30 seconds, switch on your iphone and toggle off airplane mode by moving the slider to off position (white). 3. update to latest version of ios. make sure that you have the latest version of ios installed on your iphone.. I recommend using itunes to update your iphone’s software because if your iphone is already experiencing software problems (as evidenced by the “no sim” error), i wouldn’t trust the software on the iphone to do the ios update if i could avoid it.. The sun is shining, the birds are chirping, and all’s well with the world, until you notice that “no sim” has replaced your mobile carrier’s name in the upper left-hand corner of your iphone’s display. you didn’t take the sim card out of your iphone, and now you can’t make phone calls, send or receive text messages, or use mobile data..
