We see small fixes come in targeted updates, but the iOS 9.2 update packs in a lot of new fixes that may solve a problem that annoyed you for the last several months. Here are the new fixes in iOS 9.2.
Voicemail may not be as popular today as it once was, but it’s still a useful feature; it lets you receive voice messages when you’re unable to answer the phone.

I have also seen this method fix voicemails that are not playing and not deleting, too. A quick reset of the voice app does wonders and takes two seconds.
Android phones can access voicemail by holding down the 1 key on the dial pad until the phone dials your 10-digit phone number. You will automatically connect to your mailbox and be prompted to enter your temporary password; this password is the last 4 digits of your phone number followed by the # key. Start the Google Voice app. Tap the three horizontal lines at the top left of the screen (sometimes called a hamburger menu), and then tap “Settings.” In the Voicemail section, tap “Voicemail greeting.” Tap “Record a greeting.” How do I access my voicemail? To call your voicemail on an Android phone, simply open your phone’s dial pad and hold your finger down on the “1” key. You can also call your voicemail from a different phone by calling your own number and tapping the pound key. How do you check your voicemail?