Sim

[Mark33]

Hi my sim card randomly changes phone numbers and also deletes whole numbers it's not the phone as this has happened in other phones,not good if you needed to call someone urgently and find the numbers changed or been deleted. Does this mean my sim is corrupted somehow???

[jonsie]

It may well be if it happens in other phones. 

Are you using the sim card to store numbers? If they are backed up to Google or the Cloud then the numbers should be stored on the phone.

[Mark33]

I have backed up to google thankfully because I have to import from there everytime a number changes,so annoying.

[Bambino · Accepted solution]

@Mark33 You can go into an O2 store and they will swap your account to a new sim card for free. It can take up to 24 hours for the swap, but it's normally much quicker than that.

[Mark33]

Thank you all for your help.