I have an iPad which I use with ATT in the US, and for which I have a local French-side prepay SIM which I used to use for unlimited data Fench-side. ATT has changed their international data roaming within the last year. I've stopped using my local SIM, use ATT Passport and wi-fi on-island, and my cost has dropped a bit. It's worth taking another look at ATT and seeing if it makes sense to just use ATT Passport.