Q: my iphone 5S keeps saying no sim card/no service. This started after having it on airplane mode for a few days

Presuming you are on a GSM network like AT&T or T-Mobile

you can try the following

1. If you see 'No SIM' alert on iPhone - Apple Support

2. Pop your SIM card out all the way - remove it from the tray - and pop it back in

In most instances this somehow re enables the contacts and it starts working again

3. If you try this a couple of times and it does not work then you may need to visit your carrier store for a new SIM card

Let us know how it turns out

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