[gruez]

That doesn't really answer the question. Those services basically work the same way as Google's geolocation API, but they're somehow able to magically get better accuracy.

[vlovich123]

Google's cellular geolocation implementation is probably unmaintained & all their focus is on WiFi+GPS+Fusion via SLAM.

[evoke4908]

Your assertion seems to be that Google's location service must be the best, and there's no way a trivial method can outperform it.

Have you considered that google might just perform poorly compared to other methods?