1. Checking Your Voicemail on a Cell Phone Access your digital voice mailbox through your smartphone's touch screen. On an iOS phone, tap on the Phone application and then look for a square in the bottom right hand corner of the screen that reads Voicemail.
If you are unable to set up your voicemail through phone settings, then you can try setting it up through your carrier. Voicemail is related to your carrier and it is best to be done this way. This may not work for all kind of carriers. You can easily apply this method by following the steps below:

Voicemail password and greeting. If you haven’t yet set up the Voicemail on your iPhone, the process is easy and onscreen prompts walk you through it. Open the Phone app and select Voicemail > Set Up Now. Create a password and a greeting. If you would like to change your Voicemail password or greeting down the road, these are both simple to
On your iPhone, go to the Phone app and tap the Voicemail icon. 2. Choose a greeting and password and click Set up. 3. Then, confirm the voicemail password you just created. Ideally, passwords will contain no more than seven digits, but at least four. 4. You may choose between default or custom greeting on the next screen. Pre-selected defaults