Why can't I use Wi-Fi on my iPhone as a hot spot?

I can only use my phones network carrier data and 3G when I go to use my phones hotspot and not Wi-Fi. I used to be with BT Wi-Fi but can't afford it at the moment. For some reason I'm
Able to still use BT Fons on my phone for Wi-Fi. But can't connect it to my laptop. Any help would be appreciated

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  • There's a blue spot on my iphone screen? It showed up a couple days ago and I don't know what it is. You can only see it when the screen is entirely one color but it still bothers me cause I just got this phone 2 weeks ago! I'm really upset? What do I do
  • MacBook goes to sleep mode when iPhone placed in one spot? I noticed a few months ago that every time that I place my iPhone 5 on the space to the left of my MacBook track pad, it automatically shuts off all connections to my MacBook, and the laptop goes into sleep mode. I'm wondering if anyone knows why, or if this has happened to anyone else. I just find it really weird since I have no other problems with the MacBook or the iPhone. P.S. - This did not happen with my iPhone 4
  • How to get my iPhone 4S to a Wi-Fi hot spot? I have AT&T Is there like an app? Or is it already built in? If so how to use? Does it have a separate fee?
  • Can I use my phone (not iPhone!) as Hot Spot for iPad Mini? I don't know if I should shell out $430 for iPad MIni Cellular Enabled or just get iPad Mini Wi-Fi for $300 and use my phone's (which isn't an iPhone) Internet connection as a Hot Spot. Any advice or thoughts? Is it doable?