Follow this step-by-step guide and your authenticator will be transferred over in no time, and you will receive the shortest possible trade/market hold.

• 1. Download the app on your new phone.
  
  
• 2. Enter in your username and password, then login.
  
  
• 3. You will now be asked to enter the authenticator code. Instead of providing an authenticator code, tap the button that says I no longer have access to my authenticator.
  
  
• 4. You will now be asked if you want to lock your account and begin account recovery, or if you would like to transfer the authenticator to this device.
  
  
• 5. Choose the option that says transfer the authenticator to this device.
  
  
• 6. Go through the verification process: it will send you an SMS with a verification code, then you must enter that code into the app. This should take no more than 30 seconds.
  
  
• 7. Once it is all setup and you have the authenticator on your new phone test it somewhere. For example log out of your Steam Client and try to log in using the authenticator code on your new phone to confirm that it works.
  
  
• 8. Once you have confirmed that it's working properly log out and uninstall the app on your old phone.
  
  
• 9. You will now have a market/trading cooldown of 48 hours.

For an answer to virtually every question about the Steam Mobile Authenticator visit the official Steam Support article.
Please visit that support article and look for your issue before you make a ticket or start posting questions.

For iOS you can download the Steam app here: https://apps.apple.com/us/app/steam-mobile/id495369748

For Android you can download the Steam app here: https://play.google.com/store/apps/details?id=com.valvesoftware.android.steam.community

If you encounter issues, like not having access to your phone number or any other such personal issues, you need to contact Steam Support as no one but Steam Support can help you with account issues like these.

The thumbnail is an image from Flaticon[www.flaticon.com] created by Flat-icons-com[www.flaticon.com] and licensed by CC 3.0 BY.

Other Steam troubleshooting and help guides I've created:

• Steam Download Issues and How To Fix Them
  
  
• Webpage and Connection Issues and How To Fix Them
  
  
• How To Transfer Steam Game Files and Save/Config Files

This guide was originally created by me for /r/Steam in the form of a wiki page. You can view the original wiki page here: https://www.reddit.com/r/Steam/wiki/transferring2fa

If you have feedback regarding the guide, feel free to comment below! If you need help or have support questions feel free to post in the /r/Steam Monthly Support Thread.