Resolve "2FA mobile options should be rephrased"

app/views/profiles/two_factor_auths/_codes.html.haml

 %p.slead
-  Should you ever lose your phone, each of these recovery codes can be used one
+  Should you ever lose your phone or access to your one time password secret, each of these recovery codes can be used one
   time each to regain access to your account. Please save them in a safe place, or you
   %b will
   lose access to your account.

app/views/profiles/two_factor_auths/show.html.haml

@@ -6,13 +6,13 @@
   .row.prepend-top-default
     .col-lg-4
       %h4.prepend-top-0
-        Register Two-Factor Authentication App
+        Register Two-Factor Authenticator
       %p
-        Use an app on your mobile device to enable two-factor authentication (2FA).
+        Use an one time password authenticator on your mobile device or computer to enable two-factor authentication (2FA).
     .col-lg-8
       - if current_user.two_factor_otp_enabled?
         %p
-          You've already enabled two-factor authentication using mobile authenticator applications. In order to register a different device, you must first disable two-factor authentication.
+          You've already enabled two-factor authentication using one time password authenticators. In order to register a different device, you must first disable two-factor authentication.
         %p
           If you lose your recovery codes you can generate new ones, invalidating all previous codes.
         %div

changelogs/unreleased/40140-2FA-mobile-options-should-be-rephrased.yml

+---
+title: Rephrase 2FA and TOTP documentation and view
+merge_request: 21998
+author: Marc Schwede
+type: other

doc/user/profile/account/two_factor_authentication.md

@@ -2,18 +2,18 @@
 
 Two-factor Authentication (2FA) provides an additional level of security to your
 GitLab account. Once enabled, in addition to supplying your username and
-password to login, you'll be prompted for a code generated by an application on
-your phone.
+password to login, you'll be prompted for a code generated by your one time password 
+authenticator. For example, a password manager on one of your devices. 
 
 By enabling 2FA, the only way someone other than you can log into your account
-is to know your username and password *and* have access to your phone.
+is to know your username and password *and* have access to your one time password secret.
 
 ## Overview
 
 > **Note:**
 When you enable 2FA, don't forget to back up your recovery codes.
 
-In addition to a phone application, GitLab supports U2F (universal 2nd factor) devices as
+In addition to one time authenticators (TOTP), GitLab supports U2F (universal 2nd factor) devices as
 the second factor of authentication. Once enabled, in addition to supplying your username and
 password to login, you'll be prompted to activate your U2F device (usually by pressing
 a button on it), and it will perform secure authentication on your behalf.
@@ -24,10 +24,10 @@ from other browsers.
 
 ## Enabling 2FA
 
-There are two ways to enable two-factor authentication: via a mobile application
+There are two ways to enable two-factor authentication: via a one time password authenticator
 or a U2F device.
 
-### Enable 2FA via mobile application
+### Enable 2FA via one time password authenticator
 
 **In GitLab:**
 
@@ -82,7 +82,7 @@ Click on **Register U2F Device** to complete the process.
 > **Note:**
 Recovery codes are not generated for U2F devices.
 
-Should you ever lose access to your phone, you can use one of the ten provided
+Should you ever lose access to your one time password authenticator, you can use one of the ten provided
 backup codes to login to your account. We suggest copying or printing them for
 storage in a safe place. **Each code can be used only once** to log in to your
 account.
@@ -98,7 +98,7 @@ be presented with a second prompt, depending on which type of 2FA you've enabled
 
 ### Log in via mobile application
 
-Enter the pin from your phone's application or a recovery code to log in.
+Enter the pin from your one time password authenticator's application or a recovery code to log in.
 
 ![Two-Factor Authentication on sign in via OTP](img/2fa_auth.png)
 

spec/features/u2f_spec.rb

@@ -42,7 +42,7 @@ describe 'Using U2F (Universal 2nd Factor) Devices for Authentication', :js do
       it 'allows registering a new device with a name' do
         visit profile_account_path
         manage_two_factor_authentication
-        expect(page).to have_content("You've already enabled two-factor authentication using mobile")
+        expect(page).to have_content("You've already enabled two-factor authentication using one time password authenticators")
 
         u2f_device = register_u2f_device
 
@@ -70,7 +70,7 @@ describe 'Using U2F (Universal 2nd Factor) Devices for Authentication', :js do
       it 'allows deleting a device' do
         visit profile_account_path
         manage_two_factor_authentication
-        expect(page).to have_content("You've already enabled two-factor authentication using mobile")
+        expect(page).to have_content("You've already enabled two-factor authentication using one time password authenticators")
 
         first_u2f_device = register_u2f_device
         second_u2f_device = register_u2f_device(name: 'My other device')