I'm looking to spend a year at least overseas - and looking to move to a Pre-Pay plan - and wondering if anyone else has done the investigation.

My reqts are

1) Assume minimal need for NZ Data and NZ Mins and NZ Txts
2) Need to retain NZ Num - but only to catch calls and txts
3) Plan to use wifi or hotspot of another mobile device wherever possible - but
4) Likely to Intl require data on an adhoc basis for email and apps (eg banking) tied to my NZ num..
- ie <200mb per month.. < 60 mins per month <20 txts per month..
5) Need to call internationally for back up in case of emergency..

Thx Pete