Secondary displays on smartphones have mostly been niche or luxury features, but the Nuu B40 5G brings this idea to a budget-friendly $250 phone. The question is how useful this small additional screen really is for everyday users.
- 1.6-inch AMOLED secondary display supports notifications and camera viewfinder
- 6.7-inch main AMOLED screen with 120Hz refresh rate
- Dual rear cameras: 64MP main and 2MP macro
- Powered by MediaTek Dimensity 7025 with 8GB RAM and 256GB storage
How Practical Is the Secondary Display?
The rear 1.6-inch AMOLED screen can show time, date, notifications, and playback controls, which means you can check basic info without lighting up the main display. It also acts as a camera viewfinder and shutter button, giving more flexibility for selfies or creative photography using the rear cameras.
This feature could appeal to users who want quick glanceable info or a novel way to use the camera. However, the small size and limited brightness (500 nits peak) make it more of a convenience than a productivity tool.
Good Hardware for the Price Point
The B40 5G’s 6.7-inch AMOLED display with a 120Hz refresh rate and 1100 nits peak brightness is impressive in this price category. The MediaTek Dimensity 7025 chipset combined with 8GB RAM ensures smooth performance for daily apps and moderate multitasking.
The dual rear cameras include a 64MP main sensor and a 2MP macro lens, while the front camera offers 16MP resolution. This setup is standard for mid-range phones, delivering decent photo quality without premium features.
The Trade-Off Is Software and Storage Expansion
One limitation is the lack of storage expansion; the phone only offers 256GB internal storage with no microSD slot. Buyers who store a lot of media or apps should consider this constraint.
Also, the phone runs Android 15 out of the box but lacks clear information on future software updates, which could affect long-term security and feature improvements.
Price and Availability Make It Worth Considering
At $249.99, the Nuu B40 5G targets budget-conscious buyers who want 5G connectivity and a unique secondary display. It is available directly from Nuu’s official website, which may limit availability in some regions.
Consider it if you want a large AMOLED screen with smooth refresh rates, solid cameras for the price, and the novelty of a secondary rear display. Skip it if software updates and expandable storage are top priorities.
(Via)






