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I am not sure if this Vodafones fault but it's certainly related to the network and I am not blaming anybody but more like looking for help.
I have tested this with half dozen of iPhones.
Insert Vodafone Pay as you go SIM. Wait till you get the Carrier Settings Update message click update and next thing there is no signal/service on your iPhone!
Any idea how to fix that without re-installing iOS and losing all data?
Yes it is. All the SIMs are brand new and functional. I keep facing the problem. I am work in a place where I see the problem frequently
Thanks for confirming that @Spark2 👍 As you've mentioned this happens frequently when at your place of work, this could be network related. Please try the steps in our Network Troubleshooting thread. If you're still experiencing the issue after completing these steps, post the template with your answers here and I'll have a member of the team get back to you as soon as possible.