Fido

This issue seems to be common and oddly tied to LTE in some manner, if you go into your phones settings and locate the network settings you should change the network type to the option below the top option (Not LTE) it may actually make a difference.

When it comes to phones that arn't sold directly from fido, they don't always come with the proper settings in the phone to be 100% compatible with fido's services. Fido usually sells phones compatible with most features on their network, you may hav...

This is a tough situation, I wonder if there were talks of unlocking her phone and getting a local or european sim card while she's there. It's going both save her a lot of money and possibly a lot of hastle.