What is the procedure to unlock the T-Mobile pay-as-you-go ZTE Concord cellphone?

[Zen]

QUESTION: Given a valid 8-digit unlock code, what is the procedure to
unlock the T-Mobile pay-as-you-go ZTE Concord cellphone?
http://www4.picturepush.com/photo/a/11963502/img/11963502.jp

I've had a pay-as-you-go T-Mobile ZTE Concord, bought at Target, on a T-
Mobile contract plan for months. I contacted T-Mobile 3 weeks ago and
they finally sent me the 8-digit unlock code.

But T-Mobile support had me type 3 different procedures to unlock, all of
which failed. Since the phone can be bricked if we do this wrong too many
times, I ask here:

Q: What is the unlock procedure for the ZTE Concord given I have the IMEI
and the 8-digit unlock code, and a 2-year old AT&T now defunct SIM card?

Here's what they had me do first:
a) Confirm the IMEI of the ZTE Concord by typing *#06#, with the T-Mobile
SIM in place (this works fine)
b) Remove battery to put in the AT&T (i.e., foreign) SIM card & replace
battery
Loading Image...
c) Boot phone which reports that it is in emergency mode only
d) Enter **05*PUK*PIN*PIN#
e) Then it asks for the old PUK and the new PUK
f) Then it fails and decrements from (10) to (9).

We tried that three times, and it decremented from (10) to (9) to (8)
before I put a stop to this nonsense. I really don't think T-Mobile knows
what it's doing when it comes to unlocking the ZTE Concord.

I asked for technical support, who had me do a DIFFERENT procedure, which
I show below in photos.

0. With foreign (AT&T) SIM card in place, I boot the T-Mobile ZTE Concord
cellphone
1. This shows the "long press to unlock" screen, saying NO SIM card.
Emergency calls only.
Loading Image...
2. I long press & it says "SIM network is locked" "Emergency Dialer"
Loading Image...
3. I press "Emergency Dialer" and it brings me to the Emergency Dialer
Loading Image...
4. I type "*#06#" and it's supposed to ask for the unlock code, but it
just sits there.
Loading Image...

QUESTION: Given a valid 8-digit unlock code, what is the procedure to
unlock the T-Mobile pay-as-you-go ZTE Concord cellphone?

[Zen]

Post by Zen
QUESTION: Given a valid 8-digit unlock code, what is the procedure to
unlock the T-Mobile pay-as-you-go ZTE Concord cellphone?

[QUOTE=ahbao;468749]try *983*258# at the emergency dialer, which will you
get an option to let you key in the unlock code[/QUOTE]

That worked!

You are simply amazing.

All I did was type *983*258# at the emergency dialer, and, voila! It
asked for the 8-digit unlock code!

Unfortunately, the AT&T SIM card that I used as the foreign SIM card, has
been defunct for years, so I didn't expect it to dial a number (although
I had expected 611 to work - but it didn't). So, I'm not 'positive' it's
unlocked - but it should be. I will try to borrow a 'live' AT&T SIM card
to test it out for real.

Here are some photos of the process.

1. I put a very old (no longer active) AT&T SIM card into the ZTE V768
Concord telephone:
[img]Loading Image...[/img]

2. Then I booted to where it said "SIM network is locked" "Emergency
Dialer":
[img]Loading Image...[/img]

3. I dialed "*983*258#" (here you see the shot just before the pound
sign):
[img]Loading Image...[/img]

4. That brought up a simple "unlock password" screen:
[img]Loading Image...[/img]

5. Pressing in the empty field brought up a keypad:
[img]Loading Image...[/img]

6. I entered in the 8 digit unlock code previously sent to me by T-Mobile
to my email:
[img]Loading Image...[/img]

7. The phone said to "Wait..." while it was thinking for a few seconds:
[img]Loading Image...[/img]

8. Voila! The LTE V768 Concord now appeared to be unlocked!
[img]Loading Image...[/img]

[Zen]

For future mnemonic use, note that's also: * ZTE * ALT # .

Ah, so the ZTE explains why ALL the codes start with 983!

*983*1688# - Battery temperature.
*983*2831# - Audio test.
*983*4674# - Show MCC/MNC
*983*0# - Peripheral test. LCD/KBD/AUDIO/RING
*983*833# - Firmware version
*983*3471# - LCD test
*983*3641# - Net monitor
*983*22387# - Reset
*983*33837# - Version time
*983*837# - Version info
*983*8# - LineInfo
*983*2288# - Battery level
*983*636# - Diagnostic screen/Memory usage
*983*37# - Delete all sim contacts
*983*7# - Test info
*983*38# - Crash count
*983*5391# - KBD test
*983*257# - Restore factory settings
*983*757# - Sim LOck Status
*983*258# - Enter unlock code
*983*37767# - Exception info

I tried some of these, but I don't understand the results:
For example, *983*757# to check the sim lock status:
Reported:
001/01
310/160
310/200
310/210
310/220
310/230
310/240
... and so on ... up to where it ended at
310/490

I'm not sure 'what' that just told me, but, I think it means it's
unlocked! :)

[p***@gmail.com]

QUESTION: Given a valid 8-digit unlock code, what is the procedure to unlock the T-Mobile pay-as-you-go ZTE Concord cellphone? http://www4.picturepush.com/photo/a/11963502/img/11963502.jp I've had a pay-as-you-go T-Mobile ZTE Concord, bought at Target, on a T- Mobile contract plan for months. I contacted T-Mobile 3 weeks ago and they finally sent me the 8-digit unlock code. But T-Mobile support had me type 3 different procedures to unlock, all of which failed. Since the phone can be bricked if we do this wrong too many times, I ask here: Q: What is the unlock procedure for the ZTE Concord given I have the IMEI and the 8-digit unlock code, and a 2-year old AT&T now defunct SIM card? Here's what they had me do first: a) Confirm the IMEI of the ZTE Concord by typing *#06#, with the T-Mobile SIM in place (this works fine) b) Remove battery to put in the AT&T (i.e., foreign) SIM card & replace battery http://www5.picturepush.com/photo/a/11963503/img/11963503.jpg c) Boot phone which reports that it is in emergency mode only d) Enter **05*PUK*PIN*PIN# e) Then it asks for the old PUK and the new PUK f) Then it fails and decrements from (10) to (9). We tried that three times, and it decremented from (10) to (9) to (8) before I put a stop to this nonsense. I really don't think T-Mobile knows what it's doing when it comes to unlocking the ZTE Concord. I asked for technical support, who had me do a DIFFERENT procedure, which I show below in photos. 0. With foreign (AT&T) SIM card in place, I boot the T-Mobile ZTE Concord cellphone 1. This shows the "long press to unlock" screen, saying NO SIM card. Emergency calls only. http://www1.picturepush.com/photo/a/11963504/img/11963504.jpg 2. I long press & it says "SIM network is locked" "Emergency Dialer" http://www4.picturepush.com/photo/a/11963507/img/11963507.jpg 3. I press "Emergency Dialer" and it brings me to the Emergency Dialer http://www5.picturepush.com/photo/a/11963508/img/11963508.jpg 4. I type "*#06#" and it's supposed to ask for the unlock code, but it just sits there. http://www1.picturepush.com/photo/a/11963509/img/11963509.jpg QUESTION: Given a valid 8-digit unlock code, what is the procedure to unlock the T-Mobile pay-as-you-go ZTE Concord cellphone?

(1)1.Switch off the handset, and press the power-key and volume-down key at the same time until get recovery mode;
2.Press home key get into next interface;
3.There will be four choices:reboot system now;apply update from sdcard;wipe data/factory reset;wipe cache partition;
4.Use “Vol+” and “Vol-“ to move the cursor up and down;
5.Move cursor to “wipe data/factory reset,” press “menu” key to select it.
6.Then use vol- key to move the cursor to " yes-delete all user data" , press menu key to select it.
7.Then choose reboot system now ,you phone will reboot itself.
Note:Please do remember to remind the customer this method will delete all the personal information in the phone.
(2)If you have bind the g-mail account, you can aslo use g-mail account to sign in your phone.