Go Roam combined with Data Passport

[tarantella]

If I use a Data passport in the USA (£5 per day), will I also incur a £5 Go Roam charge, meaning that I'll be charged £10 a day?

[PeteG]

Hello. 

If you're only using the data while the Data Passport is active, then you won't be charged a daily fee on top for the data used. 

It's important to remember though that the daily charge is applied whenever any allowances are used, not just data. If that happens, you would be charged for daily roaming as well. It's also worth mentioning that your daily roaming charge becomes applicable again at midnight in the destination you are at, but the data passport expires at midnight UK time, so you'll want to make sure to keep an eye on the expire time for the Passport whenever you're using the data. 

Pete. 

[sc1999]

Ouch! Good case to leave your 3 SIM at home and buy a local one. Amazon US will deliver to the UK if you order a week or two before you leave.

[tarantella]

At the moment my plan is to switch off both data roaming as well as switch off mobile data, and only use WiFi. 

That way I can still receive incoming calls and texts, and there should be zero charges.