What are the limits to sending files with an iPhone?

That depends on the email provider. Most limit it to 10 MB, a few to 20 MB. If you routinely need to exchange a lot of files then something like Dropbox, box.com, Google Drive or Microsoft OneDrive is a better solution. They have no limit for all practical purposes.

How are you sending the files; email or text? Both have limits; it isn’t the number of files, it is the total file size. However, you can enable Mail Drop, that will allow you to sent up to 2 GB in one email by “staging” it in iCloud. See this link→Add an email attachment in Mail on iCloud.com - Apple Support, specifically on enabling Mail Drop.

jamesrose192 wrote:

What are the limits to sending files with an iphone, If i select 20 files it will drop 4 or 5 files and it wont give a reason. I have tried everything and no one knows?

Yes there are always limits to sending files.

I think it’s 2 GB

jamesrose192 wrote:

Ok thank you, i can now test this theory, it gives me a starting point.

UPDATE: The Mail Drop limit is 5 GB.