3G Phone with Push to Talk

Push-to-talk (PTT) is a feature found on some mobile phones that allows them to function similarly to a walkie-talkie. When the PTT button is pressed, the phone sends your voice as a live audio stream to another specified phone or a group of phones. The communication is typically one-way at a time, mirroring the operation of a traditional walkie-talkie. This feature is popular in professional settings that require rapid and brief communications, such as construction sites or event management. Some networks and phones support the PTT feature over cellular or data networks, enabling its use over long distances, unlike traditional walkie-talkies that have a limited range.

In 2006, the LG Electronics CU400 was Cingular's first 3G phone to offer the easy and convenient Push to Talk (PTT) technology and a vast array of cutting-edge mobile features. The LG CU400 included Push to Talk advanced voice capabilities which gives customers the ability to see whether their friends, family or co-workers are available to talk before they call and to connect instantly. With PTT, customers could talk to one person or a group of up to thirty people at the same time with just a push of a button. Customers also had the flexibility to easily convert a PTT call to a regular mobile call and to store almost a hundred contacts.