Best answer by iamyelling
I am not sure what phone your daughter has but if she is not able to get 3G or 4G data there are a few things to confirm.
Check that data is enabled on the phone, confirm that the network settings are correct (this is what allows the phone to connect to iD Network and can access data.
There is an automated service here https://www.idmobile.co.uk/help-and-advice/get-your-settings/settings-tool
If you wanted to check the details are listed here -https://www.idmobile.co.uk/help-and-advice/get-your-settings
Hope that helps