My data isnt working

[GillTonic]

My husband and I both bought 40GB data packs at Heathrow before flying to Czech Republic.  Mine worked for a couple of days but now isn’t.  Am having to rely on wifi. 
i’ve used less than 1 GB. 
His has continued to work throughout. 
Why wouldn’t mine be working? 

[jr0 · Accepted solution]

recent advice on similar topic 

and

worth checking @MichaelP post too