Voice v176 User Lock Read Done by miracle box. Voice v176 is based on SPD 6531A to unlock this phone i used spacial boot cable.  Cable picture can be found below. you can make your own cable by following this guide.

How To Remove Voice v176 User Lock:

You must have any Chinese service device to remove user code from Voice v176 Like Miracle Box. I just used Miracle box and i think every mobile phone software professional have this device specially in Pakistan and India. If you have not this device you can try with Infinity cm2, Volacno box or any other witch can support spd6531A.

• Open Miracle Box and select boot9 [ SPD6600L/RT/WT6226/6531 ]
• Install SPD drivers.
• Select Rd Unlock
• Tick USB Cable option.
• Press Start Button
• Press Boot Button on boot cable.
• Connect cable to powered off phone.
• And wait let Miracle Box read flash and search codes.

  Definition Applied
  1. Power Off Phone , Remove Battery, Insert Battery Back
  2. Please Hold BootKey(UP and DOWN),Insert USB cable
  3. Use Miracle Boot Key In cases Boot key not Find
  4. Battery Should be Charged more then 50%
  Scanning USB Serial port...
  Abort by User
  None SU2Serial Port.
  1.Please Make sure install the driver
  2.The Phone may be required to read and write keys
  3.Pulled low may not, manually set.
  Definition Applied
  1. Power Off Phone , Remove Battery, Insert Battery Back
  2. Please Hold BootKey(UP and DOWN),Insert USB cable
  3. Use Miracle Boot Key In cases Boot key not Find
  4. Battery Should be Charged more then 50%
  Scanning USB Serial port...
  SU2Serial Port: COM9
  Connecting to Phone,Wait..
  Done.
  Infor: SPRD3
  Initialize boot9...
  CPU    type: 6531A
  Flash  type: NOR
  Flash    ID: 00EF0060(00170000)
  Flash Model: W25Q64DW
  Flash  Size: 0x800000(8.0M)
  Being analyzed,Wait...
  IMEI1 :356660063xxxxxx
  IMEI2 :3566600xxxxxx
  IMEI3 :35857001xxxxxxxx
  IMEI4 :9105756xxxxxxx
  Screen lock: 2111
  Unlock  Code: 5241
  Privacy  Code: 1234
  Unlock  Code: 1234
>>If try all code and wrong, please read whole flash and then analyzed