To set up Passcode Lock on iOS: 

1. Go to Settings in the top-left corner of the homescreen.
   
2. Click Privacy and Security.
   

1. Under Security, click Passcode Lock.
   

               

1. Enable Turn Passcode On.
   

                

1. Enter a 4-digit passcode.

                  

1. Re-enter the passcode.
   
2. Create a passcode hint, then click Done.

 

 

To set up Passcode Lock on Android: 

1. Click on the three dots in the top-right corner of the homescreen.
   

1. Go to Settings.

            

1. Click Privacy and Security.

              

1. Under Security, click Passcode Lock.

               

1. Enable Turn Passcode On.

                

1. Choose between the type of code between 4-digit, 6-digit, custom numeric, or alphanumeric.

               

1. If you have chosen the 4-digit numeric code option, enter a 4-digit passcode.

                  

1. Re-enter the passcode.
   
2. Create a passcode hint, then click Save.

                   

More passcode setup options 

1. You can enable Face ID and unlock Solo with Face ID (only on iOS devices)
   
2. You can also change the passcode