Incorrect phone number valiadtion

[Shajansheriff]

I'm using ember! this is the snippet

let value = this.get('value'); // +91876543210!@#$%
if (!isValidNumber(value)) { }

The above number is accepted as valid number. But obviously its not. But in
another eg: +91876543210$%^23 //invalid number
Am I doing it right?