(a2a)- Never used TMobile. As David has answered below, the map coverage looks good but I wouldn't really trust it that much. In general, Verizon has better coverage in whole of California. Thanks. read more
In Mammoth Lakes, T-mobile was pretty good. In some areas better than AT&T. (I had two SIM cards) At the time in 2014 Tmobile didn’t have LTE but HSPA+. And that was very smooth. read more
In Mammoth Lakes and on Mammoth Mountain, I actually get pretty good T-Mobile reception. It goes in and out for sure, depending on what area, but most times I have atleast a couple bars of what T-Mobile claims is 4gLTE. read more
The European history of Mammoth Lakes started in 1877, when four prospectors staked a claim on Mineral Hill, south of the current town, along Old Mammoth Road. In 1878, the Mammoth Mining Company was organized to mine Mineral Hill, which caused a gold rush. read more