Welcome to Vodafone Community
So recently I did buy credit to enable iMessage and FaceTime and phone and they all work except FaceTime which keeps saying unsuccessful activation and it is really frustrating , what can I do?
Per the below instructions on Apples website, can you confirm you are indeed on the latest version of IOS, and that you are able to receive text messages.
Also, that the date and time on your phone are correct and that the timezone showing is correct.
If so, it might be worth dropping a line to apple support while you also await a reply here. Kill two birds with one stone
It might take up to 24 hours to activate iMessage and FaceTime. If the issue continues after 24 hours, follow these steps: