USSD codes

GSM-USSD codes ( Unstructured Supplementary Service Data ) are service and control commands in the GSM cellular network, which consist of a sequence of digits, double crosses (#) and stars (*). These twelve characters are stored on every keyboard . The control commands for the cellular network must then be sent with the "green receiver".

Various settings in the network and on the SIM card can be changed with USSD codes . A cellular connection can thus be configured individually, this applies in particular to forwarding and the behavior of the mailbox .

USSD codes work similarly on every mobile phone - a clear advantage over controlling the same functions from the command menu: the menus of many mobile phones are different. In addition, menu entries do not always allow the use of all GSM functions that can be accessed via codes. Which services and settings can be changed in the network is determined by the activation profile of the card; these differ depending on the network operator .

Postpaid and prepaid cards can make a difference. The codes are linked to a dedicated GSM service in the HLR , which is freely configurable or permanently activated. As a rule, this means that prepaid customers can neither " knock on " nor set the "ringing time extension", as call forwarding to the answering machine is permanently set by most mobile network operators .

Code table (selection)

With some mobile phones, the following commands are already sent with the final pound key. As a rule, you only start the function call with the Select button. Not every code is supported by every provider or every tariff. Answers usually appear directly on the display, but they can also come in the form of an SMS.

USSD codes and their functions with various network operators
code	function	comment	turn on	Turn off	check status	example
0000	Show version number				`*#0000#`
002	all diversions	conditional and absolute		`#002#`
004	all conditional redirects	busy, not available, do not report		`#004#`		`*004333**15#` forwards all calls to an h-mailbox if the mobile phone is not registered, busy or rings for 15 seconds without result.
03	Change password for locks		`*03330`old car ``new car `*`new car`#`
04	change PIN		`*04`old PIN ``new PIN ``new PIN`#`
042	change second PIN	Only possible with phase 2 SIM	`*042`old PIN2 ``new PIN2 ``new PIN2`#`
05	new PIN using PUK		`*05`PUK ``new PIN ``new PIN`#`
052	new second PIN using PUK	Only possible with phase 2 SIM	`*052`PUK ``new PIN2 ``new PIN2`#`
06	Read out device number ( IMEI )	Pure device function; the information appears directly without pressing the connect button; no code goes online			`*#06#`
100	Show prepaid credit	at Telekom, Vodafone, E-Plus, Aldi-Talk, NettoKOM			`*100#`
100	Display own phone number	at UNITEL TMAIS (CV)			`*100#`
101	Show prepaid credit	at O ₂			`*101#`
102	Show credit or activity time windows	at O ₂ , Aldi-Talk, NettoKOM			`*102#`
102	Cost of the last outgoing call / SMS	at Vodafone			`*102#`
103	Display own phone number	at Orange.sn, Aldi Talk			`*103#`
104	Top up prepaid credit	at Aldi-Talk (MEDIONmobile), NettoKOM	`104`16-digit recharge code`#`			Insert the top-up code from the receipt accordingly, for example: `1042436155282316483#`
105	Show prepaid bonus balance	at O ₂			`*105#`
106	Show prepaid credit	at Vodafone			`*106#`
109	Inquiry as to whether Sunrise or a third-party network	at Sunrise			`109`Phone number`#`	indicates whether z. B. 076 000 00 00 is a Sunrise mobile number.
121	Show prepaid credit	at Sunrise			`*121#`
121	Show prepaid credit	at Salt			# 121 #
123	Show prepaid credit	at JAZZTEL (ES)			`#123#`
123	Show prepaid credit	at UNITELTMAIS (CV)			`*123#`
130	Show prepaid credit	at Swisscom			`*130#`
135	Display your own number	at T-Mobile D			`*135#`
140	Show consumption overview & tariff from the contract	at O ₂			`*140#`
21st	absolute diversion of all calls	Activate the old forwarding `**21#`	`*21`Phone number`#`	`##21#`	`*#21#`
		`*21`Call number `#`registers the call number and activates the forwarding, which can then be `#21#`deactivated or `*21#`reactivated with	`*21#`	`#21#`	`*#21#`
30th	receive the caller's number as the called party (CLIP)		`*30#`	`#30#`	`*#30#`
31	Call number transmission suppression ( CLIR )		`#31#`Phone number	`*31#`Phone number	`*#31#`	`#31#01781234567` suppresses the display of your own phone number for this one call
		If the code is entered separately, the meaning of the symbols `` and `#` for switching on / off is reversed out of sequence and does not refer to the feature of suppressing* caller ID ( CLIR ), but to activating caller ID	`*31#`	`#31#`	`*#31#`	`*31#`switches on the number suppression, the own number is no longer displayed to the called party `#31#`, the display is only activated again with.
37	Callback when busy ( CCBS )	valid in the Telekom mobile network	`*37#`	`#37#`	`*#37#`
43	Call waiting (CW)	if the feature is provided by the mobile operator	`*43#`	`#43#`	`*#43#`
61	conditional redirection after time interval to number ( CFNR )	possible time intervals are 5, 10, 15, 20, 25 or 30 seconds	`*61`Call number `**`time interval`#`	`##61#`	`*#61#`	`*613311**20#` (Speed dial in the Telekom cellular network) Call forwarding after 20 seconds of all incoming calls to the mailbox
62	conditional redirection in case of unavailability (note: "* # 62 #" also shows your own phone number)		`*62`Phone number`#`	`##62#`	`*#62#`	`*625500#` (Speed dial in the Vodafone cellular network) Call forwarding of all incoming calls if your own cell phone is not logged into the network because there is no reception or the cell phone is switched off
67	conditional forwarding on busy ( CFB )		`*67`Phone number`#`	`##67#`	`*#67#`	`*67333#`(Speed dial in the O ₂ mobile network) Call forwarding of all incoming calls if your own cell phone is busy and call waiting (CW) is deactivated

Web links

Individual evidence

↑ ^a ^b European Telecommunications Standards Institute: GSM 02.30 Version 5.3.0: July 1996. (pdf) Digital cellular telecommunications system (Phase 2+); Man-Machine Interface (MMI) of the Mobile Station (MS). In: Global System for Mobile communications (GSM) (etsi.org). June 1996, p. 30 , accessed on September 17, 2014 (English): "In temporary mode, to suppress CLIR for a single call, enter:" * 31 # <called number> SEND ". In temporary mode, to invoke CLIR for a single call enter: "# 31 # <called number> SEND" "
↑ ^a ^b ^c "3311, 9911, 5500: Mailbox speed dial or value-added service?" . teltarif.de. August 11, 2014. Retrieved December 21, 2015.

[GSM_02.03_v5.3.0_–_MMI;_Annex_B-1] European Telecommunications Standards Institute: GSM 02.30 Version 5.3.0: July 1996. (pdf) Digital cellular telecommunications system (Phase 2+); Man-Machine Interface (MMI) of the Mobile Station (MS). In: Global System for Mobile communications (GSM) (etsi.org). June 1996, p. 30 , accessed on September 17, 2014 (English): "In temporary mode, to suppress CLIR for a single call, enter:" * 31 # <called number> SEND ". In temporary mode, to invoke CLIR for a single call enter: "# 31 # <called number> SEND" "

[Mobilbox_Kurzwahlen-2] "3311, 9911, 5500: Mailbox speed dial or value-added service?" . teltarif.de. August 11, 2014. Retrieved December 21, 2015.