Not the same crossing the Tasman sea. It's mixed in Australia. One can only have 5 pre-paid mobile numbers under 1 name (activation limit). However, you can sti

Not the same crossing the Tasman sea. It's mixed in Australia. One can only have 5 pre-paid mobile numbers under 1 name (activation limit). However, you can still buy SIM packs from supermarkets or convenient stores, not sure if activation requires ID, it may depend on provider. NZ is obviously loose due to large number of tourists, I reckon. So easy to get SIM cards, I've got 2 (spark and 2 degrees). US also requires ID to get SIM last time I was in bay area (2016).