The citric acid makes the sodium bicarbonate more soluble in water. Old chemistry trick, still used in a lot of detergents. Alka-Selter works because it contains aspirin imho. Citric acid is also used in cheesemaking.
About Visual Voicemail. Visual Voicemail is a free1 service that allows you to listen to your voicemail messages in any order you choose from an email-like inbox. You can easily play and delete messages, make callbacks, and manage voicemail features. Use your smartphone Ã¢ you canÃ¢t set up voicemail from another phone. Have a data plan with Visual Voicemail.1. Most AT&T Unlimited PlusSM, AT&T Unlimited ChoiceSM, and Mobile Share AdvantageSM or Mobile ShareÂ® smartphone plans include Visual Voicemail. Learn how to compare and change your plan.
To activate your new AT&T Voicemail Service by dialing your telephone number from the phone assigned with the feature, follow these steps: 1  Dial your 10-digit telephone number and press * while the greeting message is playing.2  Create a passcode. 3  You will hear: The first step in setting up your mailbox is to set up a passcode.. 4  You will then be ... An AT&T representative will contact you by phone with your voicemail access number prior to conversion to AT&T Voicemail. 2  The first time you call into your AT&T Voicemail system, you'll get an easy-to-follow tutorial to help you set up your mailbox.