3 ms·

I'm not sure how accurate the data are, but take a look at opensignal.com.

• flyinghamster 11y ago
  Sensorly and CellMapper are also useful (and CellMapper makes an effort to pinpoint towers). Of course, since they use crowdsourced data, they depend on people actually running their respective apps, so the lack of indicated coverage doesn't necessarily mean there's no coverage at a given location.
• MrApathy 11y ago
  Their coverage maps offer a good indication as to what to expect in a general area, but they lack the precision necessary to perform due diligence before making a switch. I work in Manhattan, where I've twice had the misfortune of occupying a cubicle in the exact center of a building. Both T-Mobile and AT&T report full coverage for the entire area, but the many micro dead spots in homes and offices can be a real problem. T-Mobile in particular licenses spectrum that can't penetrate walls as well as some other parts of the spectrum. I'm sure there's a startup for providing user sourced coverage data at a very granular level, though it would be difficult to deal with the constant changes the carriers are making to their networks.
  • toomuchtodo 11y ago
    Do you have a phone that'll use WiFi for cellular? Most office buildings are effectively faraday cages. On T-Mobile, my phone will route SMS and calls from my iPhone over whatever WiFi network I'm on, so network quality in dense areas becomes less of a concern for me (except when I'm mobile; but then, I'm out in the open, so signal quality is better).
  • jcampbell1 11y ago
    T-Mobile has LTE band 12, so if you have a iPhone 6S it may work better now. The 700Mhz frequency is a good addition for T-Mobile, as their biggest problem in my opinion is a lack of coverage when traveling. It also penetrates walls very well.