First make sure you have enough cellular data with your phone plan, so you don’t go over your monthly data. (APPLE PHONE) Open settings and go to personal hotspot. Make sure your hotspot is on.
Open the device you want to hook up to WIFI settings and go to click WIFI. Once you do this you are going to click on the name EX. “yourname Iphone” and type in the password. Then you should be connected. (SAMSUNG PHONE) Open settings and go to Network Connections and tap Tethering And Wi-Fi Hotspot. Click on mobile Hotspot and turn it on which is at the top on the page. Go to the other device you want to hook up to your Hotspot and click on EX. “galaxy5869” and you should be connected.