There are two steps you have to do before you can use voicemail on your phone. The first is that you have to add a voicemail number. This number varies by country and also your service provider. If you’e use AT&T, you can follow AT&T Galaxy S21 voicemail setting. Open the “Phone” app. Tap the 3 dots on the top right. Tap “Settings“. Tap “Voicemail“. Tap “Voicemail Settings“. Take note of the green number below “Voicemail number“. Go back to the dialer and enter the number from Step 6 (including the *). Press the green phone button. The voicemail number has been set. Return to the Start screen.
If you know your PIN and simply want to change it, dial *98 from your home phone and enter your PIN. Then, from the main menu, do the following: For security options, press 3 To change your PIN, press 1 Enter your new PIN (4-15 digits) To confirm, enter your new PIN again
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3. Tap the "Voicemail" button in the bottom-right corner of the screen to enter voicemail.
Website: https://smallbusiness.chron.com/iphone-voice-mail-wont-save-greeting-72029.html
Because each carrier is distinct, please let us know if these processes are different for you in the comments section. Checking the Phone if there’s an ERROR on Voicemail Check it out on your phone (If No Data or Wi-Fi Connection is Available)
3. Setting Up an AT&T Visual Voicemail: Open your iPhone's Phone app. It's the white phone icon on a green background on the Home screen. Tap "Voicemail". It's in the bottom right corner of the screen.
Enter a voicemail password then click done. Re-enter password then tap done again. Now go to your voicemail greeting and you will be able to edit your greeting. Close all open apps by double-tapping the home button, then swiping up and off the screen with the app window (not the smaller icon).
Website: https://toolbox.iskysoft.com/iphone-recovery/change-voicemail-on-iphone.html
If you haven’t set up any voicemail on your iPhone, here’s how to do it step by step!
4. Toggle Cellular Service on and off. You can turn off and then turn on Cellular Service from Settings or Control Center. Launch Settings → Cellular → Toggle off Cellular Data → After 30 seconds, toggle it back on.
One of the best and quick fix to this issue is to turn off Wi-Fi for once and switch to Cellular data connection and then try to change the default greeting to custom on iPhone.
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To record a new greeting, follow these steps: Create a new greeting by tapping Record a new greeting.
To check the new voicemail greeting, extension users can dial feature code *2 to enter the voicemail menu, and follow the prompts to check greetings. Change voicemail greetings for a specific extension
Website: https://support.google.com/fi/thread/1100624/ported-number-stuck-with-old-gv-voicemail-greeting-no-way-to-change-it?hl=en
You can also click View more in Outlook to open the Voicemail folder for more info. Listen to your voicemail at a different speed
Website: https://www.jhbtele.com/blog/how-to-record-your-allworx-office-voicemail-greeting-from-any-phone/