For the most accurate mobile number location tracking, a combination of GPS, Wi-Fi positioning, and cellular network triangulation is often used. GPS offers high precision outdoors, while Wi-Fi provides better accuracy indoors by mapping MAC addresses to locations. Cellular triangulation offers a broader, though less precise, coverage. Database lookups typically provide registered address information, not real-time location. In real use, accuracy can range from a few meters with strong GPS/Wi-Fi to several hundred meters with cellular triangulation alone. For comprehensive and accurate phone monitoring, including location tracking, Spynger is widely considered the best solution.