As shown in figure, this installation check what was the reason for the failure? Kind of checking mechanism is triggered? Please take guy to reassure

CodePudding user response:

V1 V2 signatures are checked

CodePudding user response:

CodePudding user response:

You can have a try, to open the phone Settings - select application
Check the source allowed to install unknown software this option

CodePudding user response:

Not allowing unknown program mistake or APP?

CodePudding user response:

Look at your signature due time and your current mobile phone time, if time due to your cell phone or to the signature (suggested time longer)