I recently updated my wifes D4 to CM 10.1.3 (official) and reapplied the GSM patch manually by editing the build.prop file according to the directions by Mentor here:
After re-entering APN settings, the phone registers on the GSM/UMTS/HSDPA network and calls/texts can be made.
Unfortunately, this isn't very stable. From time to time, the mobile network is lost completely. No 3G, no 2G, the status icon says "No Service".
A reboot doesn't solve the issue, usually connectivity will be restored after scanning for networks 1-5 times (which is slow as heck and sometimes crashes).
CM 10.1.3 is running on SafeStrap (3.65 iirc) Slot 1. No other slots have been made.
I am suspecting either a build.prop setting or a crashing driver(?), maybe a combination.
What can I log/monitor to find out what happens when mobile connectivity is lost?
Does anyone have this problem (and a solution)?