I was experiencing problems creating a hotspot on a Galaxy S3 with 4.3. Attempting to activate resulted in a message "Unfortunately, settings has stopped." My solution was simple and when searching, had not seen this solution prior to today so I am posting here for others that may find this useful.
Check in Notifications/Application Manager, and find the "Turned Off" category (keep swiping screens to your left until you see it, e.g., Downloaded --> SD Card --> Running --> All --> Turned Off). Under Turned Off, see if "SPG" with an Android icon is listed. If so, turn it on and try turning on Hotspot. Seems there are other ways to solve this problem, but this is so simple, it is worth checking first. Googling "SPG" seems related to determining your subscription status, checked during hotspot activation. Not sure why SPG was turned off, I may have done it myself months ago during experimentation. #Android #Hotspot #SPG