You do need a visual voicemail for the last option. That is something that is provided by your cell phone provider and most cell phone provider have it by default. if you don't see it, call them and see if you can add it.
2. Set up your voicemail. Press and hold the 1 key or dial 123 on your device dial pad to call and connect to your voicemail. During the first time setup, you may be asked for your password.
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4. Request to have your voicemail service disabled. Once the representative or automated message confirms this has been done, you can hang up.
source: I want to change my iphone3gs phone greeting,it says press voicemail then greeting but when i hit voicemail there is no "greeting" button,help please?
Our last hope to fix can’t record voicemail on iPhone Verizon, AT&T, Sprint and T-Mobile is to reset network settings. Doing it won’t delete or alter the data, only the VPNs, APNs, Wi-Fi Passwords, Paired Bluetooth Devices, and other network-related settings will reset to default. Navigate to the Settings app. Go to General. Tap Reset and then select Reset Network Settings. Enter the password to proceed and confirm Reset.
Website: https://3cxhelp.telware.com/hc/en-us/articles/360046842274-How-To-Change-Your-Voicemail-Greeting-With-The-Android-Mobile-App
Open the Phone app .Tap More options Settings. Voicemail.Turn on Voicemail transcription.
From any Home screen, tap Applications.Scroll to and tap Visual Voicemail.Tap Greetings.Tap the greeting you want to use or tap Record a new greeting. To delete messages in bulk, select the menu bar in the top-right corner (represented by three vertical dots). Choose “Edit” and tap each individual voicemail that you wish to delete. The screen also includes a bulk select application for bulk deletion.
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2 hours agoFrom another extension in your system: Dial 500 , enter your extension number, then enter your voicemail password, followed by the # key. Press the * key to enter the Main Menu. Note: If you have no saved voicemail messages, you should enter the Main Menu automatically. You can skip this step. Press 2 to change your greeting.
On the iPhone, go into voicemail and tap "Greeting". Record a few seconds of something and tap stop. Before you tap save, use iFuntastic or SFTP to navigate to /var/root/Library/Voicemail on your iPhone. You'll see a file called "Greeting. amr". This is the audio you just recorded. Delete that file and replace it with your custom message which should then be renamed to "Greeting.amr". Tap "Play" on the iPhone to verify your message works. If it plays, tap "Save" and your custom message will be uploaded to AT&T's servers.
For Visual Voicemail set up, see the related topics at the bottom of this article. Call *86 (*VM) from the handset or the 10-digit mobile number from another phone. If a system greeting is played, press the Pound key (#) immediately to interrupt the greeting. Follow the instructions for choosing the language options then press the # key to
Click on the Phone icon on your home screen. Tap the Voicemail icon. Tap Set up. Follow the step-by-step instructions to set up your voicemail including how to: Select your seven to fifteen digit voicemail password (numbers only, no letters or special characters). Record voice signature and/or greeting, if desired.
4. Enter your voicemail password. If you have set a password lock for your voicemail account, you will be prompted to key it in. Use the dial pad to do so.
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Website: https://appletoolbox.com/iphone-tips-how-to-call-my-voicemail-from-another-phone/