nWarning

The travel charger must be unplugged before you remove the battery, otherwise, the phone could be damaged.

3.When charging is finished, disconnect the travel charger from the phone by pressing on the grey tabs on both sides of the connector while pulling the connector out.

①

➁

①

nNote

]If your phone is powered on while charging, you’ll see the bars on the battery indicator icon cycle.

]While a phone is being charged, ‘Charging..’ message is shown in the idle screen.

]When it is completed, ‘Charge complete’ message is displayed in the same place.

If a user cannot see the ‘Charge complete’ message, even if battery icons are show 3 blocks, it means the phone is not charged fully yet.

Getting Started

If the battery fails to charge completely:

]After turning the phone on and off, please attempt to recharge the battery.

]After detaching and reattaching the battery, please attempt to recharge the battery.

Turning Your Phone On and Off

1.Hold down the [END] key until the phone switches on.

2.If the phone asks for a PIN, enter the PIN and press

the key.

The phone searches for your network and after finding it goes to the idle screen as illustrated below. From the idle screen, you can make or receive a call.

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AT&T CU405 manual Turning Your Phone On and Off, If the battery fails to charge completely
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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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