[Q] AT&T S4 Active rooted unlocked - WiFi Access Point does not work
I've bought an AT&T Samsung Galaxy S4 Active (I537 with the firmware UCUAMF2), rooted it with Activeroot (thanks Geohot!) and than unlocked it successfully with the code I've purchased on ebay. The phone functions work well, I can make calls, send SMS and use mobile internet (4G). However, when I try to swith on WiFi access point either in Settings or by the stock app "Access Point" (and similar third parties apps too), I get the error message "Mobile data is not available or invalid SIM". I've kept all the AT&T system apps except AT&T HotSpots and just disabled OTA software update option (by renaming two KNOXAgent files). Do you have any ideas how to solve this problem?