GamePhone is a social networking application that allows users to make free voice calls and text chat with their Game Center friends. Compatible with iPod touch, iPad, and iPhone, this app lets you connect with your friends from anywhere in the world without any limitations on minutes or fees for calls. With GamePhone, you can even turn your iPad or iPod touch into a phone.

It's important to note that when using a 3G or Edge cellular connection, only text chat is supported. Additionally, iPad and iPod touch function as a speaker phone unless you have a headset and microphone attached. To use GamePhone, you will need Game Center installed on your device, with iOS 4.1 or higher for iPhone and iPod touch, and iOS 4.2 or higher for iPad.

Upgrade options within the app also allow for up to 4 person conference calls, providing a convenient way to connect with multiple friends at once. GamePhone is a valuable tool for Game Center users seeking to communicate with their friends through voice calls and text chat.