Signal app for iPhone has been released by Planetbeing of iPhone Dev Team. This app will work on iPhone 3G, iPhone 3GS, and iPhone 4.
This app shows you a map on which it displays all the detailed information of cellular towers around you and on which your iPhone is connected. Basically it detects and maps the location of nearly all the nearby cellular towers so that you can easily get a idea of cellular coverage and where to go to get the best cellphone reception.
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To use this app, you must need to jailbreak your iPhone. If your iPhone is not jailbroken then you can follow the complete step by step guide posted here to jailbreak your iPhone 3G, iPhone 3GS, and iPhone 4 on iOS 4.
According to the description of Signal app:
“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.”
You can see this app in action in the video embedded below:
Signal app for iPhone – Download
This app is now available for download from Cydia Store for $4.99.