The Apple’s iPhone 4 poor reception issue has triggered many end users to start checking and monitoring RSSI (Received signal strength indicator) bar on their devices and if you wonder how you can track its signal strength change more accurately without relying on its 5 level bars, the field test mode embedded into iOS 4.1 should give you a better picture on how your phone … Continue reading How To Enter Field Mode To Check Apple iPhone’s Signal Strength in iOS 4.1