If your voicemail has been set up and you are unable to change your greeting through the 'Voicemail' tab, dial *86 then choose option 4 to change. From a Home screen, tap the Phone app . If an app isn't available on your Home screen, swipe left to access the App Library. Tap Voicemail then tap Greeting …
3. Force close and reopen the Phone app. To force close Phone, on iPhone X and later swipe up until you see the apps in task view, then swipe up again on Phone.
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Website: https://masd.happyfox.com/kb/article/16-how-do-i-change-my-voicemail-greeting-message/
The setup information will not be preserved if you do not finish all stages in a single phone call; otherwise, you will have to restart the process the next time you access voicemail.
The good news: It's easy to set up a personal voicemail greeting on your Galaxy S10.
2. If the trashcan icon is not available, from the top right-hand corner, click on the three-dotted menu, then select “Edit.”
If you’re calling from your own phone, you’ll be able to access your voicemail without entering a PIN. This will happen even if you’ve previously set one up.
Website: https://www.dummies.com/consumer-electronics/smartphones/droid/how-to-set-up-carrier-voicemail-on-an-android-phone/
To record custom greetings simply click Record custom greeting, then hit Tap to record and start recording.
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.
You might experience issues while recording custom voicemail greetings if hardware on your iPhone, such as the microphone, is blocked or damaged. Carrier requirements
If you want to re-enable the Voicemail service on your Android device, then you can easily do that from your phone settings. I hope this guide will help you in deleting your old Voicemail greetings and record the new ones for the callers.
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For the users to be able to do this from the phone or by calling into the system the users will have to have pre-recorded greeting for different status and switch between them from the phone or by calling in to the system. They can do that from the web client, windows client or an android client.
Answer.Call 121 (or 242 if you use Vodafone Mail), and press “Send”. Press 3 (personal greeting) and follow the voice prompts: Click a problem area below for more Mobiles solutions.Getting Started. Wi-Fi & Internet.
Thank you for reaching out to us. This is something our technical teams are already working. For now. you can call “123” to access your voicemail.
Website: https://www.wikihow.com/Reset-or-Change-Your-Voicemail-Password-on-an-iPhone