cell2gps!

The OpenSignal app will allow you to do several things, such as:

Radiocells.org is a community project to collect informations on cell tower and wifi base stations and bring them on a map.The project itself was founded in 2009, then under the name openbmap.org.

Service that provides huge database which transforms mobile towers IDs to GPS coordinates

Find a cell phone location using LAC/CellID, GSM BTS coordinates

Cellumap is a revolution in cellular coverage maps, in that the coverage maps here are not created by the network operators, but rather by the users of the network (ie: you!). The coverage maps that are given publicly by the network operators are usually very high-level (ie: not very detailed, no signal strength info) and become quickly out-of-date as the network changes almost daily. Cellumap allows people to plot accurate points (using GPS) and with actual recorded signal strength (and other information) in real-time! Your privacy is also guaranteed, as there is no phone number or account info ever recorded or displayed. »