It does not seem that my voicemail is working and i cannot remember my password for voicemail on iphone

Go to settings, phone, change voicemail password, then follow instructions.

Hi Jerry

1. Call your iPhone from another phone and try to leave yourself a voicemail.
2. Reset your network settings by tapping Settings > General > Reset > Reset Network Settings.
3. Reset your voicemail password.
4. Contact your carrier and make sure that you have the voicemail feature on your plan.

How to stop iPhone calls going straight to voicemail - iOS 7 tip

www.macworld.co.uk/.../how-stop-iphone-calls-going-straight-voicemail...

May 28, 2014 - Do your iPhone calls go directly to voicemail? ... I don't remember setting my iPhone to Do Not Disturb, and it appears nor do most people ...

iPhone 5 calls go straight to voice mail ' Apple Support Communities

discussions.apple.com > Support > Apple Support Communities

Apple Inc.Dec 25, 2013 - Madman, your advice solved the problem on my wife's phone. It wouldgo to voice mail very often, seemingly for no reason. When I'd call again, ... iphone 6 going calls going directly to voice mail
Jul 20, 2015
My iPhone doesn't always ring, why?
Oct 28, 2013
calls going straight to voice mail
Feb 24, 2013
Calls going Straight To Voicemail
Jul 3, 2010
More results from discussions.apple.com

Troubleshooting Calls going straight to

Contact your wireless carrier to learn how to reset or change your voicemail password on iPhone.
If you don't remember your voicemail password or need to change it, contact your wireless carrier for assistance.
If your wireless carrier offers Visual Voicemail, you can change your voicemail password directly from your iPhone: Tap Settings > Phone > Change Voicemail Password.
you have at&t following below steps:
To reset your voicemail password over the phone by calling AT&T's automated system:

• Call 800.331.0500 from any phone or 611 from your AT&T wireless phone.
• Press the option for Voicemail Help, and then follow the prompts to reset your password.

Hi I may be wrong or not have all the facts, But, At first glance, voicemail is not an App or service that is associated with the iPhone 4 itself. How would you "edit" voicemail?? This service would be with your mobile service provider, therefore you should be able to call from any phone and check your voice mail. Here in Australia I delete Telstra voicemail by hitting 5 after the message is played back. Hope this helps solve your problem.

It's simple. Just follow below steps.

To record voicemail on iPhone, you have to first set up Voicemail and then record voicemail message by following these steps:

1. Tap on Phone > Voicemail;
2. Usually, you will be guided to automated voicemail system and you can simply follow voice prompt to set up Voicemail. If not, you have to follow these steps:
a. Click "Set Up Now". You will be required to enter password. Tap password and then click "Done". Re-tap again and click "Done". Please keep in mind that password should be between 4-6 digits in length.
b. Click "Custom" to record voicemail. Activate "Record" to start recording and tap "Stop" to finish recording voicemail. After you finish recording voicemail, tap on "Save".



For more details, check: How to Record a Voicemail on iPhone

Adding Voicemail for the First Time

1. Tap the "Phone" button on your iPhone.
2. Select "Voicemail." The iPhone will prompt you to create a password for accessing your voicemail, then will allow you to record your first greeting.
3. Click "Save" to set your recording to your voicemail greeting
   

Recording a New Greeting

1. Tap the "Phone" button on your iPhone.
   
2. Select "Voicemail."
   
3. Choose "Greeting > Custom."
4. Select "Record" and begin recording your voicemail greeting.
5. Hit "Save" to set your recording to your new voicemail greeting

Reset voicemail password from AT&T's automated system

Call 611 or 800-331-0500.
Enter the wireless number starting with area code.
Press 3 to "get help with voicemail."
Press 3 to reset your VM password.
Enter the Billing Zip code for the account.
After a few seconds, iPhone will display "Password Incorrect - Enter Voicemail Password."
Enter the last seven digits of the wireless phone number and tap OK.


Reset voicemail password from AT&T's website
NOTE: You must be registered and logged into myWireless Account to view this information.

From the myWireless Account home page, select Phone/Device then choose the Reset Voice Mail PIN link from the left column.
IMPORTANT: If there is more than one line on the account, make sure the correct wireless number is displayed in the Wireless Number list before selecting Reset Voice Mail PIN.
To reset the password for any of the lines on the account, choose a wireless number from the dropdown menu
Click Submit.
After a few seconds, iPhone will display "Password Incorrect - Enter Voicemail Password."
Enter the last seven digits of the wireless phone number and tap OK.

Reset voicemail password from AT&T's automated system

Call 611 or 800-331-0500.
Enter the wireless number starting with area code.
Press 3 to "get help with voicemail."
Press 3 to reset your VM password.
Enter the Billing Zip code for the account.
After a few seconds, iPhone will display "Password Incorrect - Enter Voicemail Password."
Enter the last seven digits of the wireless phone number and tap OK.


Reset voicemail password from AT&T's website
NOTE: You must be registered and logged into myWireless Account to view this information.

From the myWireless Account home page, select Phone/Device then choose the Reset Voice Mail PIN link from the left column.
IMPORTANT: If there is more than one line on the account, make sure the correct wireless number is displayed in the Wireless Number list before selecting Reset Voice Mail PIN.
To reset the password for any of the lines on the account, choose a wireless number from the dropdown menu
Click Submit.
After a few seconds, iPhone will display "Password Incorrect - Enter Voicemail Password."
Enter the last seven digits of the wireless phone number and tap OK.

Had the same problemwith my iPhone 3G this is how I fixed it -

1) From the iPhone 3G, I called my own iPhone 3G number.
2) Went through the setup. After finishing the ssetup Hang off the iPhone 3G.
3) Then the voicemail button on the iPhone 3G worked - first time, there was a **** pause, it asked me to enter my voicemail password that I had set in step 2, and that's it.

Good luck.