My sim card is not recognised by my device anymore.

[Snowy63]

my mobile is saying there is no sim card when it is fitted in my device.

[madasaf1sh · Accepted solution]

@Snowy63 

It is one of 2 things either the simcard reader has failed or the sim has failed. 

Try your current sim card in a different phone, if it works then contact the handset manufacturer for support. 

If it doesnt then If you message O2 on Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG) , they should be able to arrange a new sim card for you, or if you want it quicker then pop to an o2 shop with Photo ID and they can do a swap there an then for you.

[MI5]

@Snowy63 

Check the guide here Guide: Is the network down for me or everyone? 

If you need a new sim, pop into your local O2 store with ID or contact O2. 

If you message O2 on Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG) , they should be able to help you with this.

If the phone is faulty, contact a repair shop or the phone manufacturer.