Settings

Connecting TTY Equipment and a Terminal

1.Connect a TTY cable the TTY connection on the terminal. (the TTY connection location is the same as a hands-free ear socket)

2.Enter the phone menu and set up the desired TTY mode. (For a TTY mode, see below)

3.After setting a TTY mode, check the LCD screen of the phone for the TTY icon.

4.Connect the TTY equipment to the power source and turn it on.

5.Make a phone connection to the desired number.

6.When a connection is made, use the TTY equipment to type in and send a text message or send a voice message.

7.The voice or text message from the receiver end appears on the TTY equipment display.

Hearing Aid (Menu 9.5.9)

If you select On, users having hearing aid with T-Coil will have better quality of sound. This T-Coil mode will remain On for all calls.

Send DTMF Tones (Menu 9.5.0)

You can send the DTMF (dual tone multi-frequency) tones of the number on the display during a call.

This option is helpful for entering a password or account number when you call an automated system, like a banking service.

Security

Menu 9.6

Various codes and passwords are used to protect the features and settings of your phone. They are described in the following sections.

Lock Handset (Menu 9.6.1)

You can use a security code to avoid unauthorized use of the phone.

If you set phone lock to When Power On, the phone will request a security code whenever you switch the phone on. If you set the phone lock to When SmartChip Changed, your phone will request a security code only when you change your SmartChip. If you set the phone lock to Immediately, your phone will lock immediately.

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AT&T CU405 Hearing Aid Menu, Send Dtmf Tones Menu, Lock Handset Menu, Settings Connecting TTY Equipment and a Terminal
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CU405 specifications

The AT&T CU405 is a feature-rich mobile device designed to cater to a wide range of users, from beginners to more experienced smartphone enthusiasts. Positioned as a budget-friendly option, it incorporates a blend of practicality and essential technology that meets everyday communication needs.

At its core, the CU405 is built on a 4G LTE network, ensuring fast and reliable connectivity. This allows users to stream videos, browse the web, and engage in social media with minimal interruptions. The device is equipped with a 5-inch display, providing a clear and vibrant viewing experience. This size strikes a balance between usability and portability, making it comfortable to hold in one hand while still offering sufficient screen real estate for various applications.

One of the standout features of the CU405 is its impressive battery life. With a robust capacity, it ensures users can go through their day without constantly searching for an outlet. This is complemented by efficient power management features which help extend the battery's longevity even further.

The CU405 runs on Android, offering access to countless applications through the Google Play Store. This allows for the customization of the device according to personal preferences and needs. Users can download productivity apps, games, social media platforms, and more, making the CU405 a versatile companion.

In terms of imaging capabilities, the AT&T CU405 features a rear-facing camera that captures sharp photos and videos. While it may not boast the advanced photography features of high-end smartphones, it is perfectly suited for casual snapshots and video calling. Additionally, the front-facing camera enables users to engage in video chats with friends and family, enhancing connectivity.

Security is also prioritized in the CU405, featuring built-in protection mechanisms including options for secure lock screening and data encryption. This contributes to user peace of mind, knowing that personal information is safeguarded.

Overall, the AT&T CU405 is a solid choice for anyone seeking an affordable smartphone without sacrificing essential features. With its balance of performance, user-friendly design, and reliable connectivity, the CU405 stands out as a practical option for today’s mobile lifestyle.
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