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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?
Save $4.00 was $51.99

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FREE 30-day refund/replacement

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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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


Operating System: Android 8.0


RAM Memory Installed: 16 GB


Processor Series: Qualcomm Snapdragon MSM8260A


Processor Speed: 1.1 GHz


Memory Storage Capacity: 16 GB


Color: Black


SIM Card Slot Count: Single SIM


Connector Type: Micro USB


Form Factor: Bar


Biometric Security Feature: Fingerprint Recognition


Human-Interface Input: Touchscreen


Sim Card Size: Nano


Water Resistance Level: Water Resistant


Headphones Jack: No headphone jack


Compatible Devices: AT&T devices, T-Mobile devices, Cricket devices


Additional Features: Unlockable Bootloader


Flash Memory Supported Size Maximum: 16 GB


Camera Description: Front, Rear


Number of Rear Facing Cameras: 1


Number of Front Cameras: 1


Battery Average Life: 10 Hours


Phone Talk Time: 10 Hours


Average Battery Life Talk Time: 10 Hours


GPS Geotagging Functionality: True


Screen Size: 5.5 Inches


Resolution: 1920 x 1080


Display Type: LCD


Aspect Ratio: 169


Display Resolution Maximum: 1920 x 1080


Wireless Provider: Unlocked for All Carriers


Cellular Technology: 4G


Connectivity Technology: Wi-Fi


Wireless Network Technology: GSM


Brand: SIMBROS


Built-In Media: Charger, Phone


Manufacturer: att


Specific Uses For Product: Gaming


Global Trade Identification Number: 88


Battery Capacity: 2510 Milliamp Hours


Battery Power: 2 Watt Hours


Effective Video Resolution: 8 Pixels


Video Capture Resolution: 1080p


Frame Rate: 30 fps


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

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
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • 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
    • 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
    • Calidad
A mi papá le gustó. Buena calidad gracias
Reviewed in the United States on November 24, 2025 by Maria nuñez
    • Does not work well at all
I bought this phone as a backup phone. I finally decided to use it because of my old phone is not working and lo and behold. This one isn’t working either. The abs jump they close out on you. Phone calls drop everything is wrong with this phone do not buy this phone do not bother buying this phone. This is a waste of my money and I’m very disappointed that I’m not gonna be able to get my money back. Please save yourself the headache and do not buy this phone. ... show more
Reviewed in the United States on January 9, 2024 by Elisabeth Arroyo
    • Sturdy fit my cellphone perfectly
Love the cell phone protectors they are made well fit my cell phone nicely and we're not expensively I'm going to order another set.
Reviewed in the United States on March 27, 2025 by vanessa laro-conway
    • Out of series
Android was outdated
Reviewed in the United States on March 15, 2026 by MARTIN EYONG

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