How to re-install EAP 802.1x authentication methods? Is there any way to reinstall the EAP authentication methods? or Am I doomed to do a factory reset?
I can't connect to my enterprise Wi-Fi because it only has "EAP-SIM" selected and there's no way to change it.

I've tried creating it manually but still it only shows "EAP-SIM", It's stuck in that method and grayed out always.



Additional Info:


Model number: F3213 (Sony XPeria XA Ultra)
Android Version: 7.0
Android Security patch level: May 5, 2017
Baseband version: MOLY.LR11.W1603.MD.TC9.SP.... (is this needed?)
Kernel Version: 3.18.35+
Build number: 36.1.A.0.182
Service Provider: Telcel (Mexico)


PS: Can someone create a "802.1x" or "EAP" or "Authentication method" tag? Or that's not much of interest in here?
I had a similar problem with the phone. The EAP method is greyed out with the sim option selected. I did however manage to change it after playing with it for some time. For reasons unknown, the option did eventually become available to me by just trying to modify the settings then exiting and repeating that process. Once the option becomes available it did not remain available for long. As far as I looked there is no current fix, I hope this works for you too.

Hope you come right with you problem.
Cheers