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NUU B40 5G Unlocked Android Phone with 1.6-inch Rear AMOLED Screen, 8 GB / 256 GB
A budget 5G phone with a small AMOLED screen on the back. It shows the time, notifications and music controls, and works as a viewfinder so you can take selfies with the main camera.
$249.99 at NUU, no code needed
Price: $249.99 (list $299.99) at NUU's official US store, verified 2026-11-10.
Discount code: none listed; Dealectric has no NUU code to offer.
Buy: https://dealectric.com/go/nuu-b40-5g — opens NUU's official US store at no extra cost.
Warranty: 1 year from purchase. NUU repairs or replaces defects. You pay shipping to the repair center. Water and accidental damage are not covered.. Returns: 30 days from the invoice date when bought from NUU's store. The phone must be as new, with all accessories and the box, and you need an RMA by email. The return policy page says the buyer pays return shipping, but the product page advertises free returns.. Affiliate network: Awin; tracking cookie: 30 days. All NUU codes, including the ones the store rejected: NUU discount codes.
Machine-readable record: /offers.json, id = "nuu-b40-5g".
Specifications
| Rear screen | 1.6-inch AMOLED "Vista Display", 460 × 228, up to 500 nits |
|---|---|
| Main screen | 6.7-inch curved AMOLED, 2400 × 1080, 120 Hz |
| Chip | MediaTek Dimensity 7025 |
| Memory | 8 GB RAM, 256 GB storage |
| Cameras | 64 MP main + 2 MP macro on the back, 16 MP front |
| Battery | 5,000 mAh, 33 W wired charging |
| Software | Android 15; no update schedule published |
| Networks | T-Mobile and T-Mobile-based carriers (Metro, Mint and others) |
| NFC | No |
| Headphone jack | No |
| Weight | 6.5 oz (185 g) |
Model: B40 5G. Figures are from the manufacturer's official product page unless a caveat says otherwise.
Who it's for
Best for people on T-Mobile, Mint or Metro who want a rear screen for main-camera selfies and quick glances without spending flip-phone money.
Caveats
- Works only on T-Mobile's network and carriers that use it. Not for Verizon or AT&T.
- No NFC, so no tap-to-pay with Google Wallet.
- NUU publishes no OS or security update schedule. One reviewer's phone got no update in its first two months.
- No headphone jack, no published water-resistance rating, and the 2 MP macro camera adds little.
Affiliate link: if you buy through it, the merchant pays us a commission at no cost to you; that commission pays for the cart tests behind every code here. Price, availability and each code were checked on the merchant's own US store on the dates shown; they change, so the store's checkout is the source of truth. Full disclosure.