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SIMBROS

SIMBROS Radiant Core Phone At&t Unlocked u304aa 4g 5.5in 16GB Smart Phone simkey -Unlocked to Work on All GSM Carriers Like At&t T-Mobile & Cricket -Not for Verizon

  • Based on 147 reviews
Condition: New
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$47.99 Why this price?
Holiday Deal · 94% off was $799.00

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As low as $8.00 / mo
  • – 6-month term
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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Dec 20
Order within 6 hours and 12 minutes
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Features

  • Unlocked for At&t, obile, Cricket, & other GSM Networks
  • SimBros Sim Key included
  • Will Not work on Verizon
  • No Sim Card Included

Description

Unlocked 5.5" Radiant Core by At&t. This item is Brand New and Complete with all accessories. 16GB, it has been unlocked to work on At&t and other GSM Networks like TMobile and Cricket.

Brand: SIMBROS


Operating System: Android 8.0


Ram Memory Installed Size: 16 GB


CPU Model: Qualcomm Snapdragon MSM8260A


CPU Speed: 1.1 GHz


Memory Storage Capacity: 16 GB


Screen Size: 5.5 Inches


Resolution: 1920 x 1080


Model Name: radaint Core.


Wireless Carrier: Unlocked for All Carriers


Package Dimensions: 6.26 x 3.23 x 2.05 inches


Item Weight: 9.6 ounces


Item model number: u304aa


Batteries: 1 Lithium Ion batteries required. (included)


Is Discontinued By Manufacturer: Yes


OS: Android 8.0


Wireless communication technologies: Cellular


Connectivity technologies: Wi-Fi


GPS: True


Display technology: LCD


Other display features: Wireless


Human Interface Input: Touchscreen


Scanner Resolution: 1920 x 1080


Other camera features: Front, Rear


Audio Jack: No headphone jack


Form Factor: Bar


Color: Black


Battery Power Rating: 2 Watt Hours


Phone Talk Time: 10 Hours


Whats in the box: Charger, Phone


Manufacturer: att


Date First Available: January 11, 2022


Memory Storage Capacity: 16 GB


Standing screen display size: 5.5 Inches


Ram Memory Installed Size: 16 GB


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Dec 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Calidad
A mi papá le gustó. Buena calidad gracias
Reviewed in the United States on November 24, 2025 by Maria nuñez
    • DO NOT BUY THIS. IT DOESN'T WORK
This phone looked OK, but it must have been a return because the "SimBros simkey" was not in the box. The phone is older, and has a removal battery that I liked. After I put in the sim card, battery and back plate and plugged the charger in...nothing.. The charging light indicator did not come on, but I let it charge for 1 full hour in hopes the light was just not working. After the hour I tried to turn on the phone and nothing. This is a total waist of time. DO NOT BUY THIS UNLESS YOU LIKE DISAPPOINTMENT. ... show more
Reviewed in the United States on March 11, 2024 by Bruce J
    • Great value for price
Functionality: Works like any Android phone, got it as a gift for a friend, and she has not stopped thanking me
Reviewed in the United States on June 19, 2025 by Abena Appiah Lawson
    • Battery life not great at all, Does the job of a phone but not if you like apps
I bought this for $50 because I am tired of spending so much on expensive smartphones. You get what you pay for, of course... the battery life is terrible, it charges very slowly, and it's a slow phone in general. If you just need a phone to make phonecalls and do some basic app stuff (if you don't mind how slow it is) - then it would be a decent phone for you. Most things are super slow - photos, Instagram, Nike Run Club, video editor, but weirdly Netflix plays movies play at a normal speed...so that's confusing Lol. Internet browsing also seems like a good speed. I don't know how it compares to other smartphones in a similar price range, but just want to give my honest opinion and review. I hate giving bad reviews but it's just not a great phone... ... show more
Reviewed in the United States on March 12, 2024 by Amanda
    • NOT WORTH THE SAVINGS, PIECE OF USELESS TRASH
WORST PHONE, NOT WORTH THE SAVINGS. JUST PLAIN INSUFFERABLE.
Reviewed in the United States on October 27, 2025 by Nils
    • Nice Phone
Nice cute little phone. It serves my purpose. It has exceeded my expectations. Compatible with cricket. No complains
Reviewed in the United States on March 13, 2025 by Ine K.
    • Returned with no issues
Am updating review as I was able to return the product for a full refund with no issues OMG! I know this phone was only $50 bucks but it is the slowest most ridiculous phone I have ever had! I disabled all the apps but one and still can't get it to work right. HUGE waste of money!
Reviewed in the United States on May 2, 2025 by Amazon Customer
    • Cheap phone with cheap functionality
Review Image by Emet Emet
The phone works, just not well. It has the most basic features and thats ok. At the pricepoint you cant expect more than it provides. But just judging off what is is, it leaves you with too much to be desired.
Reviewed in the United States on June 30, 2024 by Emet Emet

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