Subscription pack - mobile data has stopped working

[Kerryd27]

My sons Samsung mobile data has not been working lately even though he has his full allowance still available. We have checked all settings, could there be an issue with the Sim card, it is a subscription pack sim card?  He is able to text and call and internet only works with wifi. 

[Shaz702]

Have you tried switching the data off? There's a icon that you can click on your home screen like the airplane mode it just stops you using data but you can still call but won't send, receive texts or use the internet