Need to have the password to unlock my cell phone Huawei N907

If by "restarted", you mean restored or reset, then the password that is being asked is the Google password from the previous user of the phone.

Is the phone carrier-locked ? If so, then using sim cards from other carriers will not work on your phone until you get the network unlock code for your specific device.

http://sim-unlock.net/simlock/Huawei/Y330
How to unlock Huawei Y330 by code?
Unlocking Huawei Y330 by code is very easy, it is also safest and non-invasive method of unlocking your phone. To get code for unlock Huawei Y330. You need to provide IMEI number of your Huawei. Type on keyboard *#06# or remove battery from your Huawei Y330 to check IMEI number.
To unlock Huawei phones you need to provide them with IMEI number and model of your phone.
Huawei Unlocking process is safe and easy.

Contact Vodacom for your Puk number, your service provider is the only one to have this number!

http://www.unlock.my/devices/nokia-restriction-codes

Hi if you need nck password you can visit this site SimpleUnlocking.com here you can get the code and unlock your huawei u5700 easily. To get the code you have to mentioned which country is locked now,network provider and imei number. Then they send unlock code through email.
Simple Unlocking Unlock the Huawei U5700 mobile phone

Reset a locked huawei,you can refer to the Android Unlock,it can help you unlock HUAWEI password,pattern,fingerprint,facelock,etc.

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Hi, it is posible to unlock this model with the following service: http://www.fastgsm.com/en/lg/lg/neon-gt365/unlock-code-usim-locked
The service unlocks the phone for any network but it depends on the compatibility with the network provider if it'll actually work on a particular network.

Buy online NCK code (there is a lot of unlock services available) or by a NCK dongle (more expensive solution)

I need Unlock huawei ETS3160 MODEL WIP phone..

A request for a PUK code ("Personal Unlocking Key") will appear on your phone if your SIM card PIN code is entered 3 consecutive times incorrectly.

Your SIM card will then become "PUKed" or Blocked. This is a security measure to protect your service.

You need to call the Customer Service department of your cell phone provider and they will give you the PUK code which will unblock your SIM card.