I'm looking on Apple's site and can't find any published limits on how many clients can connect to one iPhone / iPad with cellular tethering enabled in the US.
Setting aside the obvious limit where 1,000 devices would overwhelm the data connection in practice if they all want data at the same time, is there a hardware or software limit of perhaps 5 or 10 devices that can connect to one device over WiFi?
Best Answer
The thing about these limits is that the carriers and iPhone models are all different. For instance, the iPhone 5 should theoretically be able to handle up to 14 connections, but both AT&T and Verizon limits it to 5. As far as I have understood, it is hardware-limited, and therefore it is not affected by iOS version.
I have started on a list which anyone may suggest an edit to if they come up with new information. Feel free to comment as well.
Please note that Apple have not disclosed any of these limitations, they simply state:
Apple have also stated in an article about all iPhone-versions and the third-gen iPad that: