Q: Personal HotSpot between Iphone and Ipad

I have the exact same problem.  I want to use the hotspot on my iPhone 4S (Rogers) with my iPad 2 and it won't connect.

I think I resolved my issue.  I went to general settings, reset and reset network settings.  I then went back in the general settings, cellular, and turned on personal hotspot.  All seems to be working as before.  I do have to work with my carrier to credit mobile browser charges on my bill...

To All:

I have been battling this as well.  The Problem and Solution are simple ones.  After a year of this happening to me, I figured it out.

In order to stay connected, your iPhone cannot go to sleep (screen goes dark and locks) it thinks you are not using it and thus turns off the antennas, Bluetooth and wifi after a few minutes.  I dont know why, but it does.

Solution:

1. When using hotspot, plug into a power source to keep your battery.  If you cant, your battery will drain faster or you can turn down the screen brightness to compensate.

2. Go to settings, general, auto-lock, change to NEVER.

3. Turn on hotstop, connect to device and it will stay connected as long as it doesn't go to sleep.

I have been running my hotspot from my iPhone 5s to my iPad mini Retina for the last 3 hours streaming Sirius Radio and it has not disconnected one time.  I also streamed about a half hour of HBO GO with no trouble at all.

Change the settings back, it will disconnect again.

Not a great solution although it works.  APPLE - Please figure this out for us!

Hope this helps a little.