Have a look at this graph for Verizon:
Nationwide Speed and Reliability test from Root Metrics, an independent Mobile network testing company confirms that Verizon is at number one. Last year, at same time of the year, RootMetrics has reported AT&T to be number one. However, this is a proof what can happen in a year. RootMetrics however, put Sprint at number 3 ahead of many others as RootMetrics feels that Sprint can soon turn out to be the mother of networks in US. RootMetrics has also changed criteria for registering a result. Now, the mark only those cities that perform over a benchmark. However, they still have detailed reports, which can be seen on their site.
According to the reports, Verizon offers speed more than 10 MBPS in 122 cities, T-Mobile in 96 cities and AT&T in 93 cities. T-Mobile tops the list in providing the speed over 20 MBPS in maximum cities. T-Mobile provides speed over 20 MBPS in 41 cities, Verizon in 40 cities and AT&T in 14 cities. For Sprint, most of cities are having speed less than 6 MBPS. Still RootMetrics has listed it in top three.
Verizon has come up with new LTE grid in Advanced Wireless services. While T-Mobile is playing with its present spectrum and airwaves that it has acquired. Verizon has doubled in speed and capacity, to its original 4G network. T-Mobile is matching megahertz by megahertz with Verizon in most of the major markets.
Everybody knows that AT&T is the oldest network channel not only in the US but also in the whole world. Lots of new development is expected from AT&T. Reports confirmed that AT&T is also upgrading but in methodical manner selecting on Advanced LTE Technology for increasing the capacity. One cannot see a big jump in AT&T but there is a good improvement in second half of 2014. In the first half of 2014, AT&T used to provide 20+ MBPS speed to only one city. However, in the latter half of 2014, the number of cities rose to about 15. RootMetrics, however, find AT&T as the most reliable network with least call drop, call failure and lost data session problems. Root finds AT&T better than Sprint and T-Mobile on this account. Only Verizon ranks above AT&T in RootScore rankings on this behalf.
Only one fact is surprising from RootMetrics report that why have they put Sprint at number 3 position. Anyways, it is expected that the oldest horse, AT&T will be eyeing a major comeback this year. However, it is time to congratulate to Verizon and T-Mobile, on their wonderful performance in 2014.