Field test mode (FTM) orfield test display (FTD) is a software application often pre-installed onmobile phones that provides the user with technical details, statistics relating to themobile phone network and allows the user to run hardware tests on the phone.
Nokia network monitor (Netmonitor) orMonitor Mode was a hidden mode on mostNokia cell phones used to measure network parameters. Additionally there are measurements for phone and battery temperature and other phone specific measurements and tests. The mode can only be activated over a specialFBus, orMBUS cable; or in some cases over infrared. Free software exists on the internet that allows one to activate this mode. The first step is to select a Nokia Phone likeNokia 3310 that has network monitor then activate the monitor. To activate, download software such asGnokii, gammu[1], logomanager, or N-Monitor by Anderas Schmidt and connect the mobile with aFBus cable. In Nokia phones you just activate the monitor and not upload it to the phone, as it is already present.
Some ofNokiaSeries 60 phones have aField test application installed or it could be installed with privileged permissions or on rooted phone.[2]
Such mode and programs are available on Android and iPhone devices.
For GSM phones it may provide such details as