3G not available on ICS? How to roll back ICS to GB? D4 constantly dropping service
So I have been having major conectivity issues with my Droid 4 for the past 1.5 months or so. I read about other droid platform users that were experience the same issues on another forum. The 4G would be connected for ~30 minutes then drop service entirely for ~10 minutes, then regain conectivity, etc. This is extremely frustrating bordering on infuriating.
When I had GB I simply switched to 3G and my service didn't drop at all. I did this based on a suggestion I read on another forum. I upgraded to ICS hoping that it'd fix the problem. It hasn't and I still have 4G conectivity issues. I stopped by verizon last night and had them switch out the SIM card to see if it'd help. It hasn't.
Now the issue is that it seems that I can not switch the D4 connection to ONLY 3G on ICS? I am merely a novice at this but from what I read online shouldn't "GSM/UMTS" (under mobile network settings > preferred network mode) be the 3G? When I switch to that network type I get no connection whatsoever and it shows a red circle with a line across my network connection bars.
If I can't connect to 3G on ICS then is it possible to roll back this piece of s#!t ICS upgrade and return to GB which actually worked to a degree?
As it is now I am extremely frustrated and I'd appreciate it if someone could help me out. Considering the phone worked under GB/3G mode I suspect it's a verizon network issue and not some hardware issue on my end.