Hello I have the OnePlus 3T using Oxygen 4.0.3, Android version 7.
 
I am able to connect my iphone 5s, Macbook Air, iPad 4 and Toshiba Chromebook to the phone. All devices register as connected, the hotspot icon on the taskbar of the Oneplus is on, but I am unable to access the internet on any of the devices. I can connect by bluetooth but still no internet. I tethered to the Macbook with a cable, but no internet. Any ideas?
 
I use the same sim in my iphone 5 and can connect to thee mentioned devices easily and the internet works. 
 
I've tried all the solutions listed in this forum but none of them work for me. So I'm guessing it is the OnePlus 3T is the problem? Any thoughts?
 
 
Thanks again Phillip