Do you get bored to paying extra charge for using second line ?
Just pay when only using.
You don't have to share your personal number for getting verification code from social apps or your business contacts. Flex Phone Number give special private phone number for you.
You can have a new WhatsApp account on your phone with this app. You can use your second account with WhatsApp Business on the same device. You can use the verification by call feature for this.
You can get message easily on your second phone number. You can see in inbox and get notifications when receive message. Also you can control your notification settings.
Privacy: https://flexphonenumber.flycricket.io/terms.html