Replacement sim not activated

[TJ8]

Ordered a replacement sim for my sons phon, activated and put in but nor recieved a text/email to say its activated. Can't recieve texts or calls.

[caesarome]

Does it show as being activated or that it is still activating ?

[TJ8]

Yes activated. I think it must be the phone, decided to try the sim in my phone and it worked. So not sure what's wrong with it

[caesarome]

What was the issue with the original sim in his phone and is the phone itself from Sky ?

[TJ8]

Couldn't get the data to work even though resent all the network settings etc. But now with new sim can't do calls or texts, recieve or send. No phone nor from sky

[caesarome]

If the phone isn't from Sky then is it unlocked so sims from all networks can be used in it ?