I have been using the manual cell tower info by calling
this number to put the phone into Field Test mode.
*3001#12345#* then press call.
It was great, all sorts of info, you can do it now long as you havent upgraded to ver 4.0. Well now thanks to PlanetBeing, he has made a program that does the same thing, but with maps and data that the average person can understand. Exelent app. 5 out of 5 stars for this app. So if your kinda geeky or just curious about your Cell Towers in your area this is a must have. And for 5 bucks its a good buy. You have to have a jailbroken iphone, then get it from cydia.
iPhone Jailbreak Dev Team member, PlanetBeing has just release his new iPhone apps called Signal. Signal is a apps able detects and maps the location of all nearby cell towers cells from your iPhone baseband.This Signal apps which support on jailbroken iPhone 3G, iPhone 3GS and iPhone 4 available at Cydia Store. So if you are interest with iPhone Signal apps, you can download at Cydia Store with price $4.99
Signal is a utility created by iPhone Dev Team member planetbeing that displays information about the cell tower your iPhone is connected to as well as neighbouring cells. It detects and maps the location of all nearby cell towers so that the user can easily get a good idea of their cellular coverage or where to go to get the best cellphone reception. Combined with the free iPhone carrier unlock that planetbeing has helped create, a user can swap SIMs and determine which carrier is best for him or her based on cellular coverage. In addition the map, other useful technical data is displayed including RSCP (signal strength) in dBm and Ec/N0 (signal quality) to all neighbours, the PSC of the cells, as well as the frequency each cell is broadcasting in.
Signal is exclusively available from the Cydia Store on jailbroken iPhone 3G, iPhone 3GS and iPhone 4.
Frequently asked questions
How come there are only a few lines when I open Signal?
When your iPhone is in 3G mode, it takes some time before Signal can figure out where they are located and be able to draw them on the map (and draw lines connecting your current location with them). Leave it on for a few hours or take your iPhone on a walk and it should “learn” the locations of the cells faster (you only need to do this once since they are stored on flash). If you turn off 3G, you can quickly acquire the location of nearby 2G towers. A more technical answer is that for UMTS, cell ID is not decoded from the layer 3 data so this information is unavailable without altering the baseband firmware. However, as the iPhone camps on more and more local cells, it will learn to associate a cell ID with a certain downlink frequency and primary scrambling code within a locality. This lets it know the location area code and cell ID for UMTS neighbor cells that it has associated with before and be able to plot them on the map.
- For more info on Signal apps: Official Link