I have the same issue.
I did a clean installation of SD 5.3 at first time and I did not not get service, so I installed this rom "http://dl.hash-of-codes.com/files/cm9-droid3-20120316-0330.zip" then configure network (operator, band, APN, etc) and finally install the Steel Droid 5.3 without wipe.
Now I have signal but the problem with com.android.phone is still.
I hope that new release of Stell Droid is comming soon.
Thanks to chevycam94 for this excellent work.