Why should I give Firewall contact permissions?
Firewall needs access to your contacts so that you can immediately add any device contacts to your whitelist.
You do not have to give access to your device contacts to use Firewall! Without access to your device contacts, the app will screen everyone by default until numbers are manually whitelisted.
You’ll be able to manually add non-device contacts to your whitelist without giving contacts permissions. If you change your mind, you can go to your device’s Settings to give Firewall access to your contacts.