for gps : download ''gpsfix'' app from play store and let it fix.Then download ''active gps'' app and run it when you want to use gps.Or leave it running.Using this rom for the past 1 month and listed below are the issues I find.
GPS navigation-location gets lost while traveling, stays on the searching for GPS screen for a long time.
Bluetooth Connectivity-every time I need to pair to my car to get the Bluetooth connected, previously it gets detected automatically in the stock rom.
Network availability-once the network is gone, it doesn't automatically connect, need to select it manually.
I travel a lot and found these issues because of that. Other minor issues like ring tone doesn't reflect for voice calls, it reflects only for whatsapp and Skype calls.
I'm new to this, so please bare. I really liked this rom very much but if these issues has some kind of a work around it would be great.
For data connection:
1.Go to settings/system profiles/default and turn data connection on,then select 3g only from the same menu.
2.Go to sim settings and select 3g only for your data sim
3.Go to dialer and dial *#*#4636#*#* then phone information/set preffered network type set to wcdma only
for bluetooth : Go to settings/apps and find bluetooth and bluetooth share,delete cache and data on both,reboot.