In the Midpeninsula Open Space lands (e.g. San Mateo county), I routinely lose data (even 3G and 2G) and often voice on T-Mobile while other carriers are fine.

In the Midpeninsula Open Space lands (e.g. San Mateo county), I routinely lose data (even 3G and 2G) and often voice on T-Mobile while other carriers are fine. In one of these (Russian Ridge?), there is a pair of towers with maybe 30 transmitters and dishes. Even there, nothing on T-Mobile. Even my neighborhood tower was crap for about 2 months. Only after the fact did they acknowledge the problem.