How do you avoid incurring too much costs when using Go on on a cellular network. The bulk of the companies usage will be photographs. So, I was wondering if there is a way to sort of freezing the upload of the container file until the database is on a Wi-Fi network.  Alternatively one can sync server and the local copies possibly or use the camera roll to import at a later stage, but that would not be ideal for me and hence the question.

Turn off cellular data on your mobile device. I doubt there's another way.

FileMaker 13 introduced the Get ( NetworkType ) function to determine the kind of network connection you're working on. Your scripting can decide to only upload your container data when the connection is on a Wi-Fi network. Get ( NetworkType ) = 3 for a Wi-Fi network.

I didn't know this. Great news.

Can you expand on this, Jeremy? For example, let's say I am accessing a hosted file from FMGo with externally stored containers. Are you saying that you'd build a script for "Insert" that checks Get (NetworkType)=3, before it allows the Insert. Otherwise, the Insert would upload the file to the server's external container directory.

It looks like you've expanded on the idea just fine.