You can unlock doing the following process :

What you need

• A Google account that has been setup on the SmartVision previously to restore from a backup.
• Some Sighted assistance: the Process cannot be done by a blind user since the interface is not vocalized
• A SIM card with a data plan installed in the phone.
  

PIN Reset Procedure

1. Switch OFF the phone
2. Switch ON the phone pressing Volume +, waiting for the setup window  
3. Select « Recovery » using “volume +” keys then press “Volume –“ to validate
4. Select « Wipe data / Factory reset » and validate
5. Select « Factory data reset » and validate
6. After phone reset, select « Reboot system now » and validate.
7. Waiting for the Google setup until the code PIN  
8. Select « use my google account “ instead on the PIN code
9. Follow the Google connection process