Another issue that is cropping up is the edge/EDGE cycling. There seems to be an issue with the current radio files and how it accesses TCP. The end result is that EDGE cycles to edge every time there is a TCP request to the network.
Version 18.104.22.168 does not exhibit the problem if you want to go with an older software.
A temporary solution that seems to be effective with more recent software versions is to disable the APN settings. I found in my case the edge/EDGE cycled for about 10 minutes and now it is locked on EDGE for the past 10 hrs.
However one caveat is that when Third Party Software that needs access to the network is installed, it will try to access TCP. This will force edge. The suggested solution is to change the options in the Third Party Software to use BIS. I have not tried this as I have no Third Party Software installed yet.