Field test mode
Encyclopedia
Field test mode or field test display (FTD) is a software application often pre-installed on mobile phone
s 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. On older Nokia
phones this mode is known as Netmonitor while newer Series 60 phones have a Field test application which requires a hacked phone to be installed. Many other brands of phones have similar functionality available, often accessed by entering a code into the phone.
For GSM phones it may provide such details as
Mobile phone
A mobile phone is a device which can make and receive telephone calls over a radio link whilst moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile network operator...
s that provides the user with technical details, statistics relating to the mobile phone network
Public land mobile network
A public land mobile network is a regulatory term in telecommunications. A PLMN is a network that is established and operated by an administration or by a recognized operating agency for the specific purpose of providing land mobile telecommunications services to the public.A PLMN is identified...
and allows the user to run hardware tests on the phone. On older Nokia
Nokia
Nokia Corporation is a Finnish multinational communications corporation that is headquartered in Keilaniemi, Espoo, a city neighbouring Finland's capital Helsinki...
phones this mode is known as Netmonitor while newer Series 60 phones have a Field test application which requires a hacked phone to be installed. Many other brands of phones have similar functionality available, often accessed by entering a code into the phone.
For GSM phones it may provide such details as
- TDMATime division multiple accessTime division multiple access is a channel access method for shared medium networks. It allows several users to share the same frequency channel by dividing the signal into different time slots. The users transmit in rapid succession, one after the other, each using its own time slot. This...
timing advanceTiming advanceIn the GSM cellular mobile phone standard, timing advance value corresponds to the length of time a signal takes to reach the base station from a mobile phone. GSM uses TDMA technology in the radio interface to share a single frequency between several users, assigning sequential timeslots to the... - Cell IDCell IDA GSM Cell ID is a generally unique number used to identify each Base transceiver station or sector of a BTS within a Location area code if not within a GSM network.In some cases the last digit of CID represents cells' Sector ID:...
- Transmit power and received signal strength indicationReceived signal strength indicationIn telecommunications, received signal strength indicator is a measurement of the power present in a received radio signal.RSSI is a generic radio receiver technology metric, which is usually invisible to the user of the device containing the receiver, but is directly known to users of wireless...
(RSSI) - Neighbouring cell info and PLMN codes
- Location area code
- TMSI number
- Timeslot / paging information
External links
- Field test display blog (for details on enabling)