What is the NUK code for a T-Mobile Tap? I bought it from a friend and i need it to use my sim card in it.

phone lock

Unlocking a T-Mobile Android device is pretty easy and straightforward. Through the use of the Mobile Device Unlock App you can now unlock your phone with just one tap. Easy, fast, and convenient - UnlockBase can help you with all your mobile unlock needs.

Just make sure you go through the T-Mobile unlock requirements and policies:

Read more about A Complete Guide On How To SIM Unlock A T-Mobile Android Phone

The SIM card must be of the same service. For example, you can't use an AT&T sim card on a T-Mobile phone. If they are the same service, your sim is not made to work with that phone. You will have to get a new sim at your local retailer.

that means the sim card is expired ...or there is some problem in sim card

Important: Stop if you receive an error message. The device may lock permanently if you enter the incorrect code multiple times.

1. See if your phone is eligible to unlock: Mobile Wireless Device Unlocking.
2. Contact Customer Care to request the Mobile Device Unlock code for your phone.
3. Verify the IMEI by typing *#06#.
4. Insert a Non-T-Mobile SIM & turn the phone on.
5. The phone will automatically prompt you to enter the code into an empty field.
6. Click/Tap in the empty field above the "Unlock & Dismiss" options (this will display a key pad on the screen).
7. Input the unlock code provided by T-Mobile.
8. Click/Tap Unlock.
9. The phone will display Network Unlock Successful.

haw to open aplecetion

Check that your o2 number is activated and in-service by using it on another handset or just call the o2 helpdesk to get your number activated if it is a new service,
If you can assess that your new o2 number is in service and the HTC Touch still does not work, then your handset has not been fully unlock as they are basically two types of locks:
1) The 'normal' Network lock that allows any 'Orange' SIMs to work on the device (basically unlocked by NUK code)
2) The 'nasty' SIM lock' that only allows a SINGLE number on a specific SIM card to work on the locked device.
In either cases, make sure that you get all restriction lifted.

Hope it helps: let me know how you go and good luck!

it is due to the sim identification function of the phone usually the code is 12345. so that you can use different sim

Replace the SIM card.

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