Cydia WiFi Booster is a new tweak for Jailbreak iPhone handset that removes limit of WiFi signal Settings. This app has ability to detect even poor WiFi signal.
We can see all (really all) WiFi connections available in the circumstances. In addition, we able to view signal strength of each individual WiFi network, expressed in numerical form.
Cydia Bigboss WiFi Booster costs $1.99. Worthy or not?