data not working after an upgrade

Hiya, It could be worth testing your new Sim Card if you’re not using it already that you recieved when you processed the update, if that doesn’t work. I’d suggest visiting your local Currys store and requesting for them to provide you with a new Sim card and getting that activated to see if it’s an issue with your Sim. 

Here’s a few further things you could try.

Try your Sim card in another phone and see if you get data, if yes then it could be that your network settings need resetting and I suggest looking into help articles for your specific phone.

If the sim still doesn’t get data in another phone then I would still suggest getting a replacement Sim from your local Currys store. While you bought the contract online, your local store should still be able to process a free replacement Sim for you, you’ll just need to activate it through the iD website.