Website: https://3cxhelp.telware.com/hc/en-us/articles/360046842274-How-To-Change-Your-Voicemail-Greeting-With-The-Android-Mobile-App
From another Ooma Office phone. Dial your internal extension number and wait for the call to roll to voicemail. Press [*] and enter your PIN. Select option 5 from the main voicemail menu. Select option 1 from the submenu to record a new greeting, or option 2 from the submenu to record a new name.

In some cases, people are successfully able to change the voicemail language from Spanish to English but the greeting language is not changed. So, if you need to change the language of voicemail greetings, we have added the steps that you need to follow; Open the phone app on your Verizon mobile Now, dial *86 and press the # button Choose option one and press the # button too A new window will appear in which you need to enter to password After entering the password, press the pound key again Say the greeting or signature in English and press # for confirmation
If it is the first time you are using the Voicemail, you should set up or change your default voicemail on iPhone 7 first. If you have set up the voicemail, you can skip to next part. Or else, you can get some helpful information to set up voicemail. As different carriers may have different ways to set up voicemail on iPhone, the part just take AT&T for an example.