Ok it is in google>location settings under the accounts in system settings.
I'm having the same problem. I've tried all of these things and nothing has worked. Mine works sporadically but can't seem to get a stable fix on the satellites. If it's not reliable as a navigation tool it's totally useless. I'm hopeless with maps and really need to know it won't drop the GPS signal. Does anyone know if Google Maps recognises this as an issue?
I experienced slow lock too on GPS after JB OTA update in my XT910 but I find out that was related to my data connection, If I use a VPN app the GPS lock faster, also other apps work better I don't know why
BTW if some one can share with me the stock JB camera apk I will appreciate, after the OTA update my camera for some reason is now downgraded.
You can post me a link to download the apk here XT910 JB Stock camera downgraded?