How to find out if I have hotspot on my iPhone?

I just want to check if I have hotspot on my iPhone (tmobile).

How can I check? And if I do have it, how do I use it?

Check in your settings. There will literally be a option toward the top near the Wi-Fi option that says "personal hotspot"

If there's one just turn it on, give it a name and a password if desired. Very easy. If its not there you don't have one

So go to 4shared.com on your phone browser, make a account for free and download foxfi hotspot or any other hotspot.

Settings > Cellular > Third one down Set up Personal Hotspot. If you do have it and it's on, you can spread your phone's data and share it with other devices through Wi-Fi, bluetooth, and I think even USB if you need to power a laptop or something. Typically hotspot packages cost extra over what you already pay for your plan. Best luck.