AT&T Visual Voicemail not setting up and other features not available

Also no dialer codes work at all I mean NONE

Hello @Ethanm2034, we're happy to help with your Visual Voicemail concerns.

If you have not reset your password we recommended following these steps to complete your visual voicemail setup. 

First, make sure you're in an AT&T wireless coverage area. If you’re not. You won't be able to create a new voicemail password.

1. Go to your account overview and open My wireless.
2. Scroll to My Devices & add-ons and choose the device you want to manage.
3. Select Manage my device.
4. Look in Device options & settings, choose Reset voicemail password, and follow the prompts.

Also, make sure to set up your AT&T voicemail within 60 days of activation or it’ll be automatically removed from your account.

1. From your wireless phone, press and hold 1 or the Voicemail key.
2. Select your language preference.
3. Create a 7 to 15-digit password.
4. Select your preferred greeting.
5. Listen to the brief voicemail tutorial.

Once you have confirmed the setup of your voicemail and password, and you are still not able to access your Visual Voicemail, visit our voicemail troubleshoot page by going to this link: https://www.att.com/support/ts/wireless/Voicemail&s=KM1008685 and sign in for personalized step by step instructions to find a solution.

To stay connected with Wi-Fi calling in the U.S. and most international destinations, we'd recommend you to go through this link: https://www.att.com/support/article/wireless/KM1063258. 

Also, please visit this link: https://www.att.com/support/article/wireless/KM1046244#:~:text=HD%20calling%20issues%201%20Have%20a%20compatible%20HD,most%20recent%20device%20software%20updates%204%20Contact%20us to get crystal-clear conversations and reduced background noise with AT&T HD Voice on our network.

Feel free to reach out to us, if you've any further questions!

Thank you for visiting the AT&T Community Forums.

Robin, AT&T Community Specialist.

The phone is a factory unlocked phone I bought off of Amazon, the model number is SM-G988U1, will the factory unlocked state hinder the ability to use Wi-Fi Calling and other features.

Thank you for reaching out to us. Sounds like you've been through a lot, and we want to help change this experience for you @Ethanm2034.

After reviewing your concern and trying to resolve through the Community Forums, it looks like you may need more account specific support.  To assist you best, we encourage you to review our Contact us Page : https://www.att.com/support/contact-us/ to identify what method you’d prefer to reach out for this account level help.  You can call, chat, or reach out via social media, and we can review your specific issue and provide you support.  We’re sorry we weren’t able to resolve your concern directly in the forums, but let us know if we can assist with anything else.

Thank you for visiting the AT&T Community Forums.

Susan, AT&T Community Specialist.