Troubleshooting 
        
        Use and manage the right passwords for the smartphone unlocking 
        
        
    At the start of the smartphone, the 1st password corresponds to the PIN of the operating SIM card.
*- A 2nd password is required, if it was set by the user.
**- Smartphone wih Fingerprint function embedded (recognition by fingerprint), the fingerprint is used as a password.
- After 3 failed attempts using fingerprint function, wait for 30 seconds to start again or use a 2nd unlocking method saved to the settings of fingerprint function (pattern, Pin or 
password: tap on 

 or 

 to validate).
***"
Voice Match" function can also unlock the smartphone and launch actions by voice recognition (for example: call a contact, web search, etc.) when saying "Ok Google" (the smartphone has to be connected to the Internet via Wlan or data connection).
****Caution1. For safety matters, the access to the smartphone is made impossible without the right unlocking method. In this case, the smartphone has to be reset.
2. Backup account: to synchronize contacts, photos and use Google services, it necessary to enter the same email address (Gmail or Google) as on a previous smartphone or after a reset.
* Click here to know how to change the SIM card PIN
 ** Click here to know how to enable, modify or remove screen unlock mode
*** Models with Fingerprint function: click here to know how to enable, modify or remove screen unlock mode
 **** Click below to know how to launch actions with voice control ("Ok Google") and enable voice control:
- models powered by Android™ Lollipop (5.0) version - models powered by Android™ Marshmallow (6.0) and Nougat (7.0) versions					
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