And it isn't like you're wasting their time with the longer message. This person called you, which means that they set aside, at minimum, about 5 minutes for their call and they were mentally prepared to spend at least a minute on polite "Hi Bob, how are you and the family?" chit-chat, so a message that is 10 seconds longer is NOT an imposition.
With a voicemail, though, you (should) know exactly who you’re calling – their name, their company’s name, how many employees they have, etc. Your message can be hyper-customized to that one person you’re calling. When you make that message just for them, they’ll feel more of a responsibility to return your call.

It's important to mention your follow-up plans in your sales voicemails. Sometimes just the knowledge that you'll call again is enough to entice a prospect to respond. Let them know that if you don't hear back from them, you'll follow up in a few days or next week.
Follow the instructions and press that number. You will be asked to delete your current Voicemail greeting. Click on the ‘Yes’ button that appears on the screen if you want to remove that. You can save your new recorded Voicemail greeting or can use the default recorded option. From the home screen, select the Phone app. Note: Alternately, you can set up voicemail by selecting the Phone app then selecting and holding the 1 key. Select Keypad, then select the Visual Voicemail icon. Select Start. Select Ok. From any Home screen, tap the Menu key. Tap Settings. Tap Call settings. Tap Voicemail. Tap Voicemail again. View the voicemail number. Press and hold the 1 on your device’s dial pad to call and connect to your voicemail. Press the star * key to access the main menu. Press 4 to access the mailbox options. Press 7 to change the language of the voicemail prompts to either Spanish or English.