Field test mode (FTM) or field test display (FTD) is a software application often pre-installed on mobile phones that provides the user with technical details, statistics relating to the mobile phone network and allows the user to run hardware tests on the phone. == Nokia network monitor == Nokia network monitor (Netmonitor) or Monitor Mode was a hidden mode on most Nokia cell phones used to measure network parameters.
Field test mode (FTM) or field test display (FTD) is a software application often pre-installed on mobile phones that provides the user with technical details, statistics relating to the mobile phone network and allows the user to run hardware tests on the phone. == Nokia network monitor == Nokia network monitor (Netmonitor) or Monitor Mode was a hidden mode on most Nokia cell phones used to measure network parameters.
Source: Wikipedia "Field test mode" · CC BY-SA 4.0
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