Hello,
I just borrowed a friend's O2 phone for my upcoming Europe trip. She bought her phone in Ireland with an Irish Sim card. I am travelling to Switzerland, Madrid, Italy and Greece and I want access in all places. Can I do that with only one
Sim card. Is it best to buy from O2? I see some other providers with roaming Sim cards?
I mainly need for my wife to be able to reach me. She's pregnant and we want to keep close contact.
Thanks all