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? Create a New CenturyLink Email Address: A Step-by-Step Guide My CenturyLink Account is Suspended or Not Working What If My Mobile Device Is Lost Or Stolen? How to Upgrade from a Free Account