Photos over 3G? Better take out a mortgage...
First take a photo and determine its size. You may find you are using 2 or 5 or so Megabytes per picture....
BUT...Fiemaker 12 let's you make a thumbnail of that photograph reducing its image size and file size.
Assuming the file will be on the local IOS device abroad. Then that device could send a record with a smaller thumbnail rather than the full image file in the container field. Later the image could be tranmitted over a regular cable connection at lower cost.
This per megabyte charge for non-citizens or those without a 2 year contract is a real rip off.
You might look into acquiring a resident contract rather than the per megabyte.