- Yes, two devices can be connected to an iPhone.
- Connect the 2 (or more than 2) devices at the same time to iPhone personal hotspot.
- Check for carrier limit, but usually iPhone and carrier limit is 5 devices.
I also use iPhone7 and has the same problem. But this is not because iPhones allow only one device to be connected at the same time.
If it is another Apple product with the same iCloud, you can connect it even without turning on personal hotspot.
But if you are turning on the Personal Hotspot, and connecting a device, whether an apple device or a non-apple device, the hotspot will stays on but after few minutes, when you search for wifi in another device, the Hotspot wont be visible, because iPhone uses similar technology like hiding or encrypting the SSID.
To connect 2 or more Devices to iphone Wi-Fi, try to connect it together at the same time.
There is no settings that can be tweaked for this problem. This is kind of a security feature, that prevents any cracking of Wi-Fi passwords and Apple won't be changing that in forthcoming updates.