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Samsung

Samsung Galaxy Z Flip 4 5G, US Version, 256GB, Blue - Unlocked (Renewed)

  • Based on 2,677 reviews
Condition: Refurbished - Excellent
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Availability: Only 1 left in stock, order soon!
Fulfilled by YY Wireless
Arrives Wednesday, Apr 29
Order within 23 hours and 5 minutes
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Service provider: Unlocked


Color: Blue


Size: 256GB


Features

  • The 6.7 Dynamic AMOLED 2X foldable main screen supports an adaptive 48120 Hz refresh rate and HDR10+, offering incredibly fluid motion for gaming, media playback, and split-screen multitasking when using Flex Mode.
  • On the outside, a 1.9 Super AMOLED cover display gives you quick access to notifications, calls, music controls, and widgets without needing to unfold the device, making it convenient for one-handed or pocket use.
  • Built for performance, its powered by the Snapdragon 8+ Gen 1 processor paired with 8 GB of RAM and up to 512 GB of UFS 3.1 storage (depending on model), enabling fast app launches, strong 5G connectivity, and reliable multitasking.
  • The dual rear camera system features a 12 MP wide lens with OIS plus a 12 MP ultra-wide lens, letting you shoot stable, high-quality photos and 4K video, while the 10 MP front camera handles crisp selfies and video calls.
  • Designed with durability and security in mind, the Flip4 has an IPX8 water-resistance rating, an Armor Aluminum frame for added structural strength, a side-mounted fingerprint sensor, and Stereo speakers to deliver rich sound when watching media or flipping the phone open.

Description

Introducing the Samsung Galaxy Z Flip 4 SM-F721U, a remarkable fusion of style and functionality. Elevating your smartphone experience with its innovative design, this device seamlessly combines cutting-edge technology with a sleek, compact form factor. With its revolutionary foldable display, the Galaxy Z Flip 4 offers a unique and immersive viewing experience. From streaming your favorite content to multitasking with multiple apps, the flexible screen adapts to your needs, providing unparalleled versatility.

Brand: Samsung


Operating System: Android


Ram Memory Installed Size: 8 GB


CPU Model: Snapdragon


CPU Speed: 2.75 GHz


Memory Storage Capacity: 256 GB


Screen Size: 6.7 Inches


Resolution: 2400 x 1080


Model Name: Galaxy Z Flip 4


Wireless Carrier: Unlocked


Operating System: Android


RAM Memory Installed: 8 GB


Processor Series: Snapdragon


Processor Speed: 2.75 GHz


Memory Storage Capacity: 256 GB


Color: Blue


SIM Card Slot Count: Single SIM


Connector Type: USB Type C


Form Factor: Foldable Screen


Biometric Security Feature: Fingerprint Recognition


Human-Interface Input: Touchscreen


Sim Card Size: Nano


Material Features: Recyclable


Water Resistance Level: Water Resistant


Headphones Jack: No headphone jack


Specific Absorption Rate: 1.6 Watts per Kilogram


Additional Features: Foldable


Flash Memory Supported Size Maximum: 256 GB


Front Photo Sensor Resolution: 10 MP


Rear Facing Camera Photo Sensor Resolution: 12 MP


Camera Description: 12


Camera Flash: no flash


Shooting Modes: Custom


Optical Sensor Resolution: 12 MP


Number of Rear Facing Cameras: 2


Number of Front Cameras: 1


Item Weight: 0.41 Pounds


Item Dimensions: 6.5 x 2.83 x 0.27 inches


Video Capture Resolution: 4k


Frame Rate: 60 fps


Screen Size: 6.7 Inches


Resolution: 2400 x 1080


Display Type: AMOLED


Aspect Ratio: 1.331


Display Resolution Maximum: 2640 x 1080 Pixels


Wireless Provider: Unlocked


Cellular Technology: 5G


Connectivity Technology: Bluetooth


Wireless Network Technology: Wi-Fi


Brand: Samsung


Model Year: 2022


Built-In Media: Charging Cable


Manufacturer: samsung


Model Series: Z Flip


Specific Uses For Product: photography, streaming, video conferencing, gaming


UPC: 749876120749


Unit Count: 1.0 Count


Warranty Description: 90 Day Limited Warranty


Battery Capacity: 3700 Milliamp Hours


Battery Description: Non-removable Li-Po Battery


Battery Power: 3700 Milliamp Hours


Battery Average Life: 18 Hours


Phone Talk Time: 14 Hours


Average Battery Life Talk Time: 24 Hours


GPS Geotagging Functionality: True


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Apr 29

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • The Future of Phones, Renewed and Remarkable
I recently took the leap into the future of smartphones by purchasing the SAMSUNG Galaxy Z Flip 4, factory unlocked with 256GB, in its renewed condition. Having had my doubts about both a folding phone and a renewed device, I'm pleased to report that both have exceeded my expectations in every way. Here's why the Galaxy Z Flip 4 has won me over: Condition and Aesthetics: Opening the package, I was immediately struck by the pristine condition of the Galaxy Z Flip 4. For a renewed device, it was indistinguishable from a brand-new model. The sleek design, combined with the novelty of its flipping mechanism, makes it a standout device that draws attention and curiosity. Performance and Storage: With 256GB of storage, I've had no issues keeping my plethora of apps, photos, and videos on the device without worrying about space. The performance is top-notch, with seamless app transitions, no lag, and the ability to handle multitasking with ease. It's clear that the renewal process has not impacted its functionality. Display and Usability: The folding display is nothing short of revolutionary. The crisp, clear, and vibrant screen makes watching videos, browsing, and using apps pleasurable. The ability to fold it into a compact form is not just a novelty; it's incredibly practical, making it more pocket-friendly than any other smartphone I've owned. Battery Life: Initially, I had concerns about the battery life, given the phone's unique form factor. However, the Galaxy Z Flip 4 has consistently provided a full day's use on a single charge, even with heavy usage. The fast charging capability is a bonus, ensuring I'm never out of power for long. Camera Quality: The camera quality is impressive, producing sharp, vivid photos and videos. The unique form factor offers new ways to capture content, like setting the phone on a surface to take group shots with the timer without needing additional equipment. Renewed Value: Opting for a renewed Galaxy Z Flip 4 not only saved me money but also reassured me of Samsung's quality refurbishment process. It's an environmentally conscious choice that doesn't compromise on the cutting-edge experience this device offers. Overall Experience: The SAMSUNG Galaxy Z Flip 4 (Renewed) has been an absolute joy to use. It combines the novelty of a folding screen with the reliability and performance expected from a flagship Samsung device, all while offering great value and sustainability through its renewed status. Recommendation: For those intrigued by the latest in smartphone technology but looking to make a more wallet-friendly and environmentally conscious choice, the renewed SAMSUNG Galaxy Z Flip 4 is an excellent option. It's a conversation starter, a multimedia powerhouse, and, above all, a fantastic phone that stands out in the crowded smartphone market. ... show more
Reviewed in the United States on March 6, 2024 by Sarah McDowell
    • Black line of death the cause of reliability issues
Service provider: Unlocked Color: Bora Purple Size: 128GB
Review Image by Corey
Review Image by Corey
Review Image by Corey
Review Image by Corey
Review Image by Corey
Review Image by Corey
Review Image by Corey
Review Image by Corey
Review Image by Corey
Review Image by Corey
Up to today, the phone has never been dropped (on hard surfaces), looks brand new as if it came out of the box besides a very small blemish to the right of the camera lens. The color is beautiful and matches what is shown online. The phone was very responsive and quick for multiple tasks, it even worked well on Genshin Impact (the game) besides getting a little on the warm side. I paid $299.99 (plus $18.00 tax totaling $317.99) June 22 2024. The phones screen started peeling and shortly after turning into a black line 8-9 months of ownership. As of today, ~16 months of ownership the black line grew to cover ~1 inch varying in size across the middle of the screen. (The progression of the peeling over ~7-8 months) The black line and above no longer responds to touch, only can see display above the black line. Under the black line works as it should. The touch screen not working on the top was discovered as of yesterday. I'm not sure of how many total reports there have been of this model of phone but with my experiences I would consider a different phone and perhaps avoid all of the Galaxy Z Flip or Fold phones. If you do consider to buy a Flip or Fold phone and expect it to last quite a bit longer than the warranty, while still being reliable, I highly advise to do your research. Sharing the steps I've taken so far... I've contacted Amazon. Seems they cant do much as its after a year of when I'm reporting this. I left a voicemail to Chubbiestech, the seller, to see what they can do. I will give Samsung a try as well as this problem is from a design flaw, not wear and tear. I also taken multiple pictures and a video of the phone and the phone case purchased for the phone to show the condition of the phone (phone looks brand new besides the screen where it is peeling and some finger prints on the sides) I would post the video however it is too big in size. The pictures shown are the phone along with the phone case. The case is scratched up a bit on the bottom left corner, however this only caused a cosmetic flaw to the case purchased separately for the phone. The case did its job protecting the phone for normal use excluding drops as the phone has never been dropped on hard surfaces. I'm sure its been lightly tossed on the bed, dropped into a pocket, and placed into a purse with other items that most likely caused the cosmetic flaw on the case. The phone has only been open while in use, so only fingers and weather touched the screen. A screen protector has never been applied to the phone. This is the first time I've ever had trouble with a product design itself sold on the Amazon platform out of 86 items. ... show more
Reviewed in the United States on October 31, 2025 by Corey
    • Good phone that you have to be careful with
Service provider: Unlocked Color: Bora Purple Size: 128GB
Very nice graphics would buy again. The battery doesn't last that long, so you have to charge it a lot.
Reviewed in the United States on April 18, 2026 by Tracy Turner
    • Screen broke from regular use
Service provider: Unlocked Color: Pink Gold Size: 128GB
Review Image by Nana
Edit: Broke in less than two years just from regular folding. Only the second half works. It's basically useless since I can't touch quick settings and notification bar. Original review: I bought this phone as soon as prices dropped. Things I like: - It's small enough to fit in pockets and purses. - Front (selfie) camera is higher quality than any android I've used. - Can use cover screen as a selfie mirror when taking photos with back camera. - On the cover screen I can easily read weather info, control music, and turn off upcoming alarms. - Can multi-task with split screen or pop-up screen. - Locked screen shows charging time. - Control panel shows battery % of Bluetooth devices. - Can automatically turn off phone to keep things running smoothly. Things I dislike: - Battery life isn't long. - Doesn't have a headphone jack. - Phone is slim and long. Hard to press things at the top. - Camera is very warm toned and saturated. - A lot of gaming apps haven't adapted to this screen ratio yet. - Cover screen can display the full SMS or IG message for two seconds when they're received, but once I try to toggle to the notifications slide, the message is kept private. - Fingerprint reader is too sensitive. ... show more
Reviewed in the United States on November 20, 2023 by Nana

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