Easy Tech TutsHow to Sign Into Slack on Phone From Desktop Easily 2026
By Impran M N
Typing complex passwords and workspace URLs on a small mobile screen is tedious. This guide shows how to use Slack's built-in QR code feature to sign into the mobile app instantly using your already authenticated desktop session.
01Open your workspace menu
Click your workspace name or logo at the top of the left sidebar in the Slack desktop app.
02Select Sign In on Mobile
Hover over your organization profile and click 'Sign in on Mobile' to open the QR code panel.
03Display the QR code
Keep the unique, single-use QR code visible on your desktop screen.
04Open the Slack mobile app
Launch the Slack app on your phone and tap the 'Scan QR Code' option on the sign-in screen.
05Scan and authenticate
Grant camera access, align your phone with the code on your monitor, and hold steady until the sign-in completes.
Frequently asked questions
Does the QR code expire?
Yes, each generated QR code is single-use and expires after a short time for security.
Can I use this to sign into multiple workspaces on my phone?
Yes, you can repeat the process for each additional workspace you need on mobile.
What if my phone doesn't have a QR scanner in the app?
Make sure you're using an updated version of the Slack mobile app, as older versions may lack this feature.
Is scanning a QR code more secure than typing a password?
It avoids exposing your password on a mobile keyboard and ties authentication to a device you're already logged into.
Watch the full walkthrough
The same steps, demonstrated on screen from start to finish.
