Can I Use An Authenticator App If My Phone Is Not Connected To Cell Service? May 14, 2024 19:55 Updated Yes, authenticator apps are accessible offline as well. Related articles What Type Of 2FA Is Available? My CenturyLink Account is Suspended or Not Working What If My Mobile Device Is Lost Or Stolen? Create a New CenturyLink Email Address: A Step-by-Step Guide How to Upgrade from a Free Account