System properties

The table below defines the generic system properties used by the S60 platform.

**Table:** Generic system properties
System property	Description	Value
`microedition.platform`	Name of the host platform or device.	Defined in CLDC 1.0 and CLDC 1.1.
`microedition.encoding`	Character encoding.	Always returns `ISO-8859-1`.
`microedition.configuration`	Name and version of the supported configuration value is either “CLDC-1.0” or “CLDC-1.1”, depending on which configuration is implemented.	Defined in CLDC 1.0 and CLDC 1.1.
`microedition.profiles`	Names of the supported profile as specified in the MIDP 2.1 API specification. Devices that implement other profiles will also return names of those profiles.	Defined in MIDP 2.1 (`java.lang` package documentation).
`microedition.locale`*	The value is determined according to the language settings of the device.	Defined in MIDP 2.1 (`java.lang` package documentation).
`microedition.commports`		Defined in MIDP 2.1 `javax.microedition.io.CommConnection`.
`microedition.hostname`	Returns the local host	`localhost`
`microedition.jtwi.version`		Defined in Java Technology for the Wireless Industry API specification, version 1.0.

*) The set of locales supported by the device depends on the languages and region.

The table below defines the S60 specific system properties used by S60 platform. These system properties are available to the application by calling method java.lang.System.getProperty

**Table:** Nokia system properties
System property	Description	Value
`com.nokia.network.access`	Network access type of used active connection or a set default access point.	`pd` - Packet data in GSM network `pd.EDGE` - Packet data in EDGE network `pd.3G` - Packet data in 3G network `pd.HSDPA` - High speed downlink packet access for 3G networks `csd` - Circuit switched data, for example GSM CSD/HSCSD data call `bt_pan` - Bluetooth PAN network `wlan` - Wireless network, for example 802.11b, 802.11G or WiMaX `na` - Not applicable, the implementation can’t determine the type
`com.nokia.mid.dateformat`	The preferred date format indicated as a string pattern, which is formatted according to the rules defined in Java 2, Standard Edition, version 1.4.1, `java.text.SimpleDateFormat` class documentation for date patterns. Only subset of `SimpleDateFormat` defined pattern letters are used in this system property.
`com.nokia.mid.timeformat`	The preferred time format indicated as a string pattern, which is formatted according to the rules defined in Java Standard Edition, version 1.4.1, `java.text.SimpleDateFormat` class documentation for time patterns. Only subset of `SimpleDateFormat` defined pattern letters are used in this system property.	hh:mm a
`com.nokia.memoryramfree`	This can be used to query the available RAM in the operating system. This is a more realistic estimate of available RAM on the device than what is returned by `Runtime.getRuntime().freeMemory()`, which returns only free memory in the Java virtual machine. Note: This property is not available on all S60 3rd Edition devices.
`com.nokia.mid.batterylevel`	The battery charge level of device.	Returns the percentage value of battery level.
`com.nokia.mid.countrycode`	Current network country code.	Returns the two-letter country code defined in ISO-3316.
`com.nokia.mid.networkstatus`	Whether the device is in home network or roaming currently.	`home` - The device is in the home network `roaming` - The device is roaming `unknown` - The status of the network is unknown
`com.nokia.mid.networkavailability`	Network availability.	`available` or `unavailable`
`com.nokia.mid.networkid`	Network identification parameters, such as network ID (NID in CDMA and MNC in GSM) and network short name.	Returns two values: network ID network short name
`com.nokia.mid.networksignal`	Current (GSM/CDMA) network signal strength. The output format is as follows: `<the number of bars the phone should display>(<the signal strength in dBm> dBm)`	Returns two values: the number of bars the phone should display the signal strength in dBm
`com.nokia.mid.cellid`	Identity or location label of the cell from which a mobile telephony call was made or received.	Returns the cell ID.
`com.nokia.mid.imei`	The IMEI (International Mobile Equipment Identity) of the device.	Returns a 14 digit decimal number that uniquely identifies the device.
`com.nokia.mid.imsi`	The IMSI (International Mobile Subscriber Identity) stored in the SIM card. Note that the access to this system property is limited with `com.nokia.mid.Mobinfo.IMSI` permission. By default this permission is available only in manufacturer and operator domain.	Returns the subscriber number associated with the device. The IMSI number is usually 14 decimal digits long, but it may be shorter.

The com.nokia.mid.timeformat and com.nokia.mid.dateformat system properties indicate the user preferences of date and time formats.

For example, in many devices there are settings available for user to indicate the date and time formatting settings: ordering of date, month and year components of date strings, separators used between components of date and time strings, whether 12 or 24 hour clock is used, and so on. The values of above system properties indicate the currently active user preferences for these settings. MIDlets can use these values to format date and time strings they, for example, need to display in user interfaces.