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The GSM service is weak. I lose service in buildings on a regular basis. Spotty service in the mountains and rarely any service while skiing. Digital service is strong. I never had any problems. Worked in buildings, skiing, everwhere.

No reception in Colorado Mills except on eastern 1/3 of mall, little reception in Denver West United Artists, but outside reception is full.

Replaced Nokia 6820 with Audiovox SMT5600 on AT&T / Cingular GSM. Get either 0 or 1 bars in basement (out of 5), while Nokia 6820 gets at at least 3 (out of more bars). The phone can't receive the incoming call, so I may have to go back to a Nokia. Too bad because the Audiovox is a nice Smartphone.

Rock solid. Seems like the tower is across the street!

Not always the best reception, but the Analog network still works in the mountains where the Digital-only networks / phones fail.

While driving on Alameda near Green Mountain, my signal always drops. Also, live off W. Warren near Rooney Elementary and phoe constantly drops calls or calls go straight to voicemail. Called AT&T to complain twice and the calls dropped each time.

Traveling east past quebec into Aurora AT&T GSM service is practiacally non exsistent. If you are anywhere just North of the Lowry redevelopment good luck even getting a signal.

Reception sucks outside or inside. Can hardly ever use phone when at home. Have had probrlm with Verizon, Nextel and Sprint in this area but ATT GSM has been the worst.

reception okay, but doesn't work well in basement - perhaps GSM 850 will solve this issue

In the Riva Ridge Apartments and Parking Lot, reception shows full strength, but service is often dropped and many times I miss calls and cannot make calls.