Ooma voicemail app is among best voicemail app android providing high degree of flexibility. The app offers its users with high-quality voicemail and all-around phone services from anywhere. You can manage your voicemails efficiently and effectively with this app. Ooma allows you to delete, compile, and listen to all voicemails easily.
The connection of voicemail to custom greetings, ring groups, advanced call routing, etc. can also work within a local system. The biggest difference is that the setup and maintenance of complex voicemail procedures in a PBX will far outreach a hosted setup.

You can also erase any of your existing recordings associated with your voicemail box. To delete your name recording, unavailable greeting, or temporary greeting: Dial *98 on your OnSIP-registered phone. Enter your voicemail box number. Enter the PIN/password for your voicemail box. Press 0 for voicemail box options. Press 1 for unavailable greeting, 2 for your name, or 3 for temporary greeting. Press 2 to delete the existing recording on file.
If you can’t set up Visual Voicemail, contact your carrier to make sure that your plan supports the feature. If you need help, try these steps. Call your iPhone from another phone and try to leave yourself a voicemail. Go to the keypad and press and hold on the 1, or press the Call Voicemail button. Open your Android’s Settings. Swipe down from the top of the screen, then tap the gear-shaped “Settings” Scroll down and tap Apps. Scroll down and tap Phone. Tap Storage. Tap CLEAR DATA. Tap OK when prompted. Clear the Voicemail app’s data if necessary. Call your carrier to report the problem.