ingeniería, en el que aparecen dos opciones.
<- * * <- Muestra el estado de los bloqueos del móvil. Aquí podemos ver si el móvil es libre

nokia 3320
*#842# ¿????

Samsung codes
IMEI number: * # 0 6 #
Software version: * # 9 9 9 9 # or * # 0 8 3 7 #
Net Monitor: * # 0 3 2 4 #
Memory reset (removes SIMLOCK!!!): *2767*3855# (works only on older versions)
Memory reset CUSTOM: *2767*2878# (works only on older versions)
Change dispplay contrast: * # 0 5 2 3 #
Memory info: * # 0 3 7 7 # or * # 0 2 4 6 #
Battery status: * # 9 9 9 8 * 2 2 8 #
Change sound of alarm: *#9998*289#
Vibra test: *#9998*842#

calve para desbloquear pantech *01763*737381#

WITHUS ##835235+ 000000 IGUAL AL GTRAN PARA DESBLOQUEAR

SAMSUNG: 620 811 411 : 47*869#08#9
SAMSUNG fashion MENU 60 + 626 Y LA CLAVE DE EXTRANAM ES 835235
SAMSUNG SCH N315 MENU 70+ 000000 O 835235
SAMSUNG SCH N 255 MENU 6*+ 626 + 000000 O 835235
SAMSUMG COLOR SCH 565 MENU 8*1626
DESBLOQUEO SAMSUNG COLOR *759#813580#22 ATENSION LETRA A ULTIMOS CUATRO DIGITOS SE LE EN DE ATRAS ASIA ADELANTE EJ: 1234 TE APARESERA A4321
VERIZON AUDIOVOX ##20022002 + END + 000000
DESBLOQUEO FCN #626# FCN
FCN 941273# FCN

LIBERACION SAMSUNG GSM #*7337#
CODIGO MASTER NOKIA *#7763#
desbloqueos samsung
*2767*3855#
*2767*2878#
*2767*637#
*2767*7822573738#
*2767*688#

Lg sin chip liberación 2945#*# reset factory.
Para liberar Samsung V200

Enter these 5 reset codes WITHOUT simcard:
1.*2767*63342# auto restart indicates “insert sim”
2.*2767*3855# auto restart indicates “insert sim”
3.*2767*2878# auto restart indicates “insert sim”
4.*2767*927# auto restart indicates “insert sim”
5.*2767*7822573738# auto restart indicates “insert sim”
Phone unlocked to all networks
Now insert Sim card
CODIGOS LIBERAR E700 (yo no los he probado asi q spero sus comentarios)
Enter *2767*3855# with an accepted SIM card
If this code fails, enter *2767*688# or #*7337#
Tambien sirven para los modelos S500 / P400 / E500 / X100 / X600 / E100
S500 / P400 / E500 / E700 / X100 / X600 / E100
Enter *2767*3855# with an accepted SIM card
If this code fails, enter *2767*688# or #*7337#
SGH-600 / SGH-2100
*2767*3855#
Enter the code above with an accepted sim card.
A300 / A400 / A800
*2767*637#
Enter the code above with an accepted sim card.
S100 / S300 / V200 / V205 / E710 / E715 / D410
*2767*7822573738#
Enter the code above with an accepted sim card.
If the code above fails:
1.) Insert a SIM card which the phone does not accept
2.) If you see Wrong Card, type #9998*3323#
3.) Press exit and select number 7. Phone will reboot
4.) Now the SIM should work
5.) Type *0141# and then press call
6.) Power off phone and insert another SIM card
7.) If a code is requested, enter 00000000
M100
1.) Type *#99998*627837793# (Wrong Entry will display)
2.) Type *#9998*737 (Network Status will display)
3.) Press > [] (play/stop) until the phone shows NCK/SPCK number.
4.) Last 8 digits of NCK/SPCK will be the code needed
5.) Type #0111*<last 8 Digits of NCK/SPCK># (Personalization Cancelled will display)
S105
a) Without a SIM card, Enter *2767*7822573738#
b) After the phone reboots, enter #0111*00000000#
Unlocl Samsung s307:
1. Turn off your phone, put in a SIM of a provider that it is not locked to, and turn it back on.
2. At the wrong card message, type *#9998*3323#. A message will pop up telling you to press exit, so hit the right softkey. Choose number 7 (or 8 or 9 work, I think). Your phone will reboot and your SIM will work.
3. Type *0141# and then hit call. This will give you a message saying your phone is personalized.
4. Power down your phone and insert a SIM card other than the one that is in it. Power back up your phone.
5. At the SIM code prompt type 00000000, that is 8 zeroes