Htc EVO 4G User Manual download pdf (Page 42)

32 2B. Settings

Airplane Mode

Airplane Mode allows you to use many of your device’s features, such as Gallery, camera, and Music, when

you are on an airplane or in any other area where making or receiving calls or data is prohibited. When you

set your device to Airplane Mode, it cannot send or receive any calls or access online information.

To quickly turn Airplane Mode on or off:

䊳 Press and hold the power button ( ), and then tap Airplane mode in Phone options.

While in Airplane Mode, the status bar will display .

To turn Airplane Mode on or off in Settings:

1. Press > and tap Settings > Wireless & networks.

2. Select the Airplane mode check box and press .

While in Airplane Mode, the status bar will display .

TTY Use With Sprint Service

A TTY (teletypewriter, also known as a TDD or Text Telephone) is a telecommunications device that allows

people who are deaf, hard of hearing, or who have speech or language disabilities, to communicate by

telephone.

Your device is compatible with select TTY devices. Please check with the manufacturer of your TTY device to

ensure that it supports digital wireless transmission. Your device and TTY device will connect using a special

cable that plugs into your device’s headset jack. If this cable was not provided with your TTY device, contact

your TTY device manufacturer to purchase the connector cable.

When establishing your Sprint service, please call Sprint Customer Service using the state

Telecommunications Relay Service (TRS) by first dialing . Then provide

the state TRS with this number:

866-727-4889.

To turn TTY Mode on or off:

1. Press > and tap Settings > Call > TTY mode.

2. Tap TTY Full, TTY HCO, or TTY VCO to turn TTY mode on.

– or –

Tap

TTY Off to turn TTY mode off.

Note: When enabled, TTY mode may impair the audio quality of non-TTY devices connected to the headset jack.

WARNING: 911 Emergency Calling

Sprint recommends that TTY users make emergency calls by other means, including Telecommunications

Relay Services (TRS), analog cellular, and landline communications. Wireless TTY calls to 911 may be

corrupted when received by public safety answering points (PSAPs), rendering some communications

unintelligible. The problem encountered appears related to TTY equipment or software used by PSAPs. This

matter has been brought to the attention of the FCC, and the wireless industry and the PSAP community are

currently working to resolve this.

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Htc EVO 4G User Manual Page 42