What’s in the box
Product description
Experience the Future of Mobile Technology with the NUU B40 5G
Discover the NUU B40 5G — featuring a 6.7″ FHD+ AMOLED main screen, a 1.6″ rear Vista Display and Dual SIM 5G support for a smarter, more connected mobile experience.
| Carrier Compatible Unlock for | T-Mobile | Mint Mobile | Metro by T-Mobile | Ultra Mobile | Tello | Q Link Wireless | Gen Mobile | |
| Carrier Compatible Unlock for | Lycamobile | Patriot Mobile | Telcel America | SpeedTalk Mobile | Hello Mobile | |
| DOES “NOT WORK” With: | NO AT&T | NO Cricket Wireless | NO Verizon | NO Boost mobile | NO Tracfone | NO Pulse Cellular | NO Union Wireless | |
| Main Camera | 64MP | Front 16MP | Marco 2MP | |
| Main Display | 6.7” AMOLEDS FHD+ 1080 x 2400 | 120 Hz | |
| Rear Display | 228 x 460 |
| Battery | 5000mAh |
| Product Size | 162.4(H) x 73.9(W) x 8.4 (L) mm |
| 5G | N2/5/25/41/48/66/71/77 |
| 4G | B1/2/3/4/5/7/12/13/17/25/26/28/48/66/71 |
| 3G | B1/2/4/5/8 |
| 2G | B2/4/5/8 |
| Connectivity | Wi-Fi 802.11 ac/a/b/g/n (2.4GHz / 5GHz) | Bluetooth BT 5.2 | GPS with A-GPS Support | |
| Data Cable | Type-C to Type-C |
| SIM Slot | Dual SIM |
| OS | Andriod 15 |
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What can I do with the NUU B40 second display?
Without flipping your phone, you can check notifications and call previews, control music playback, monitor time, battery level, step count and selfies with the rear 64MP camera. Simple double tap activates it, faster way to stay connected.
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Is the NUU B40 compatible with my carrier? Does it support Dual SIM?
The NUU B40 is a fully unlocked Dual SIM 5G phone compatible with T-Mobile, Mint Mobile, Metro, Qlink and Tello. Use two lines on one device — ideal for separating work and personal calls, or maximizing coverage on the go.
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How good is the gaming performance on the NUU B40?
The NUU B40 features a 120Hz FHD+ AMOLED display, Octa-Core 2.5GHz processor and 8GB RAM for smooth, lag-free gameplay. Enjoy fluid motion, vivid colors and fast app loading — great for gaming, streaming and watching sports.
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What is the camera setup on the NUU B40?
The NUU B40 has a 64MP rear camera, 2MP macro lens and 16MP front camera, all enhanced by AI optimization for sharp, clear shots in any lighting. Perfect for creators and everyday users of unlocked Android phones.
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My NUU B40 5G phone isn’t charging to full. What should I check?
Check if Adaptive Charging (Battery Protection / Custom Charging Mode) is enabled in Settings. This optional feature limits charging to preserve battery health. Simply disable it — or adjust the charge limit — to restore full charging capacity.
















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