Nubia NaviX Ultra: Big Battery, 144 Hz OLED and Doubao AI Assistant

Nubia NaviX Ultra is a smartphone developed through a collaboration between ZTE and ByteDance. It has a 6.78-inch OLED display with a 144 Hz refresh rate, a 7,100 mAh battery and the integrated Doubao AI assistant. A premiere was planned for September 16, but the available information does not specify the year or confirm whether it took place.

Display and design

The OLED display has a 1.5K resolution and a refresh rate of up to 144 Hz. The higher refresh rate can make scrolling through the interface and visuals in supported games appear smoother, while the large screen provides more space for video and working with content.

On the back, a horizontal camera module spans the full width of the phone. There is also a dedicated orange button for AI features. The colour options include black, pink, white and blue.

Memory and performance

The NaviX Ultra uses Chinese LPDDR5X memory with speeds of up to 10,667 Mb/s. Fast RAM helps transfer data between the memory and the chipset, which can be useful for demanding apps and multitasking. Overall performance also depends on the processor and system optimisation, however, and the available information does not identify the chipset.

Doubao and app controls

The Doubao AI assistant is deeply integrated into the phone’s system. Its tasks are divided into four areas: understanding commands, completing tasks, remembering information and overseeing security.

The agent uses MCP services provided directly by apps. Instead of reading the screen and simulating taps, it can access app functions through those services. What it can control in practice will depend on which functions apps make available this way. Details of how the assistant and its security mechanisms work remain open.

Cameras

There are three rear cameras: a 50 MP main camera, an ultra-wide camera and a periscope telephoto camera. The ultra-wide camera captures a wider scene, while the telephoto camera is designed for optical zoom on more distant subjects. The 50 MP front camera can be used for selfies and video calls.

Resolution and the presence of a telephoto lens alone do not guarantee photo quality. Results also depend on other camera characteristics and image processing.

Battery and charging

The 7,100 mAh battery provides a large capacity reserve for media playback, gaming and everyday use. Actual battery life will depend on how the phone is used and how well it is optimised.

The phone supports both wired and wireless charging. Available figures mention 90 W or 100 W, but it is unclear which power rating applies to which charging method. A wireless charger must still be connected to a power source.