Reception is non-existent from 23rd Street across the Memorial Bridge. Going south on the GW Parkway from downtown, reception does not return until after passing Reagan Airport. Heading north on the GW Parkway, reception returns for approx. 5 miles then is lost as you approach the McLean exit until you approach the 495 ramp.

I have been using Cingular service for a while. I was using Cingular TDMA service; I never had any problem about this particular area. Recently I have switch to Cingular GSM service. It seem like Cingular GSM coverage is great in out door. But In door single is very week and very bad in certain areas. I work near construction Ave. & 23 rd street NW in Washington D.C. near State department. My Samsung s307 pick-ups very good signal outside in this particular area but inside the building is pretty bad. If I go inside the building about 50 to 100 feet my cell is dead and no service available. It happens to me many building around that corner. I think Cingular should install another GSM tower in that area.