By Chris Mills
For the last decade, the cell industry was ruled by a duopoly. Verizon and AT&T were the biggest networks with the most subscribers and best coverage, and it wasn't even close. But in the last few years, T-Mobile has spent aggressively to try and bridge the gap between its network and the competitors.
According to the latest OpenSignal regional study, the transformation is complete: Verizon and T-Mobile are in a virtual tie for first place, based on availability and speed, while AT&T and Sprint are duking it out for last place.
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