personal hotspot trouble
for some unknown reason, whenever I type in a apn address for the personal hotspot, my iphone doesn't remember it. that is, once i hit the <settings, the address is earased
iPhone 4, iOS 7.1
iPhone owners who previously made use of the Personal Hotspot feature on wireless networks that do not support it are now out of luck. Changes in iOS 7.1 have disabled the ability to manually edit tethering settings for unauthorized carriers. Appears to have been done at the request of carriers.
There is no fix.