OpenSignalMaps

The ultimate wifi and signal finding tool. Supports GSM, CDMA, 4G, 3G, 2G.
Now you can refresh network! Boost your bars at the touch of a button.
Coverage problems? The best toolkit for improving your cellular and wifi signal.
– Signal direction
– Signal graph
– Map and radar views of cell towers & WiFi routers
– Detailed signal strength data
– Save data to SD card
– Widget
– Save wifi access points and maps of their locations by running the speed test
– Option to notify you at loss of signal (entering “deadzones”)
– History of signal readings

The simplest tactic to improve your reception is to walk in the direction of your signal. Not foolproof, but worth a shot!
Option to contribute to the OpenSignalMaps.com project: we’re TRUE coverage maps of cell phone networks & wifi data points freely available to all.