TTY ModeA TTY (also known as a TDD or Text Telephone) is atelecommunications device that allows people who are deaf,hard of hearing, or who have speech or language disabilities,to communicate by telephone.Your phone is compatible with select TTY devices. Pleasecheck with the manufacturer of your TTY device to ensurethat it is compatible with digital cell phones.Your phone and TTY device will connect via a special cablethat plugs into your phone’s headset jack. If this cable wasnot provided with your TTY device, contact your TTY devicemanufacturer to purchase the connector cable.1. From the main Call settings page, tap TTY mode.2. Tap TTY Full, TTY HCO, or TTY VCO to activate thefeature, or TTY Off to deactivate the feature. Off is thedefault setting.HAC ModeThis menu is used to activate or deactivate Hearing AidCompatibility for this device.� From the main Call settings page, tap the Hearing aidsfield to activate the feature (green check mark), or tapit again to deactivate the feature. Off is the defaultsetting.Use Internet CallingThis menu is used to setup and configure your InternetCalling feature.� From the main Call settings page, tap the Internetcalling field, and then select an available option.Choose from: For all calls when mobile networkavailable, Only for Internet calls, orAsk for every call.257