DD2 is off next March to SE Asia & then longish stints in both Aus & NZ.
She'll have her iPhone on PAYG as she goes but wants a mini too.
The options are basically 2 with 16GB or 32GB (£199-259) or 4 - a bit faster with much better camera - 16GB at £319 or 64GB at £399
The question really is whether the 4 is worth so much more than the 2 (& whether 16/32/64 GB is the best option)
TIA 