Thanks for great help. Bought TravelSIMs at Aust Post for unlocked iPhone 3's. Activated on-line, put $ 50 on each phone. Deducts from C/C when balance goes below $ 10 . TravelSIM has some great features; Anyone can send us free SMS through the TravelSIM website, outgoing calls from Europe etc. seem cheap. Really easy to set up. Had a call from their Excellent Customer Service within minutes to explain & offer tips. From now on will take to NZ; Ozzie mobile in NZ is poisonous. Downside; Calls & SMS from Australia to your TravelSIM # go via Estonia at (Telstra) $ 1.21 per minute...so tell your family to SMS you through the website. In the end, I still have to take the (Telstra) iPhone 4's as well - PITB