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    Samsung Galaxy Z Flip4 Refurbished Highlights

    • 3,700 mAh battery, with 25W wired charging
    • 6.7-inch OLED display at 120Hz
    • 12MP main camera with optical image stabilisation
    • 512GB storage, with 8GB RAM
    • Snapdragon 8+ Gen 1 processor
    • 1,200 nits peak brightness

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    Compare Samsung Galaxy Z Flip4 Refurbished specs, features and price with similar smartphones and alternatives.

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    General

    General specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    BrandSamsungMotorolaRedmiSamsung
    ModelGalaxy Z Flip4Motorola S50 NeoRedmi Note 15 Pro 4GGalaxy S21 Plus
    Announced2022, August 102024, June 252025, December 182021, January 14
    Device type / form familySmartphoneSmartphoneSmartphone
    Release statusAvailable. Released 2022, August 25Available. Released 2024, June 28Available. Released 2026, January 06Available. Released 2021, January 29
    Model numbersSM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W, SM-F7210XT2427-425100RA69GSM-G996B, SM-G996B/DS, SM-G996U, SM-G996U1, SM-G996W, SM-G996N, SM-G9960

    Design

    Design specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    DimensionsUnfolded: 165.2 x 71.9 x 6.9 mm Folded: 84.9 x 71.9 x 15.9-17.1 mm161.9 x 73.1 x 7.6 mm (6.37 x 2.88 x 0.30 in)163.2 x 76.3 x 8 mm (6.43 x 3.00 x 0.31 in)161.5 x 75.6 x 7.8 mm (6.36 x 2.98 x 0.31 in)
    Weight187 g (6.60 oz)171 g or 173 g (6.03 oz)195 g (6.88 oz)200 g (Sub6), 202 g (mmWave) (7.05 oz)
    Build materialsPlastic front (unfolded), glass back (Gorilla Glass Victus+), aluminum frameGlass front, plastic frame, plastic back or silicone polymer (eco leather) backGlass front (Gorilla Glass Victus 2), plastic backGlass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
    Form factorFoldable smartphoneTouchscreen smartphone

    Display

    Display specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    DisplayFoldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak); 6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)P-OLED, 1B colors, 120Hz, HDR10+, 1600 nits (peak); 6.7 inches, 108.4 cm2 (~91.6% screen-to-body ratio)6.77 inches, 110.9 cm2 (~89.1% screen-to-body ratio); AMOLED, 68B colors, 120Hz, 3840Hz PWM, 3200 nits (peak)Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak); 6.7 inches, 107.8 cm^{2} (~88.3% screen-to-body ratio)
    Cover displaySuper AMOLED, 1.9 inches, 260 x 512 pixels (Gorilla Glass Victus+)
    Screen resolution1080 x 2640 pixels (~426 ppi density)1080 x 2400 pixels, 20:9 ratio (~393 ppi density)1080 x 2392 pixels (~388 ppi density)1080 x 2400 pixels, 20:9 ratio (~394 ppi density)
    Display featuresFoldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)1B colors, 120Hz, HDR10+, 1600 nits (peak)68B colors, 120Hz, 3840Hz PWM, 3200 nits (peak)Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)
    Display technologyFoldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)P-OLEDAMOLEDDynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)
    Display size6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)6.7 inches, 108.4 cm2 (~91.6% screen-to-body ratio)6.77 inches6.7 inches, 107.8 cm^{2} (~88.3% screen-to-body ratio)
    Refresh rate120Hz120Hz120Hz120Hz
    Brightness1600 nits (peak)3200 nits (peak)
    HDR formatsHDR10+
    Pixel density~393 ppi388 ppi
    Aspect ratio20:9 ratio
    Screen-to-body ratio~91.6% screen-to-body ratio89.1% screen-to-body ratio
    Display protectionCorning Gorilla Glass Victus 2Corning Gorilla Glass Victus

    Performance

    Performance specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    ProcessorQualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)Qualcomm SM6375 Snapdragon 6s Gen 3 (6 nm)Mediatek Helio G200 Ultra (6 nm)Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
    CPUOcta-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)Octa-core (2x2.2 GHz Kryo 660 Gold & 6x1.7 GHz Kryo 660 Silver)Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
    GPUAdreno 730Adreno 619Mali-G57 MC2 (1.1GHz)Mali-G78 MP14 - International Adreno 660 - USA/China
    Process node6 nm6 nm
    User interfaceHyperOS 2
    Software supportup to 4 major OS updates

    Memory & Storage

    Memory & Storage specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    RAM8GB12GB8GB, 12GB8GB
    Storage512GB256GB256GB, 512GB256GB
    Storage technologyUFS 3.1UFS 2.xUFS 2.2UFS 3.1
    Expandable storageNomicroSDXCmicroSDXC (uses shared SIM slot)No
    Memory configurations256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM

    Cameras

    Cameras specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    Rear camera12 MP, f/1.8, 24mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 12 MP, f/2.2, 13mm, 123˚ (ultrawide), 1/3.06", 1.12µm50 MP, f/1.8 (wide), 1/1.95", 0.8µm, PDAF, OIS; 8 MP, f/2.2, 118˚ (ultrawide)200 MP, f/1.7, 23mm (wide), 1/1.4", 0.56µm, multi-directional PDAF, OIS 8 MP, f/2.2, 15mm, 120˚ (ultrawide), 1/4.0", 1.12µm12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video
    Front camera10 MP, f/2.4, 26mm (wide), 1/3.0", 1.22µm32 MP, f/2.5, (wide)32 MP, f/2.2, 22mm (wide), 1/3.6", 0.61µm10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF
    Rear camera featuresLED flash, HDR, panoramaLED flash, HDR, panoramaLED flash, HDR, panoramaLED flash, auto-HDR, panorama
    Rear camera video4K@30/60fps, 1080p@60/240fps, HDR10+1080p@30/60fps1080p@30/60fps, gyro-EIS8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
    Front camera featuresHDRHDR
    Front camera video4K@30fps1080p@30fps1080p@30fps4K@30/60fps, 1080p@30fps
    Wide camera50 MP, f/1.8 (wide), 1/1.95", 0.8µm, PDAF, OIS
    Ultra-wide camera8 MP, f/2.2, 118˚ (ultrawide)

    Battery & Charging

    Battery & Charging specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    BatteryLi-Po 3700 mAh5000 mAhSi/C Li-Ion 6500 mAhLi-Ion 4800 mAh
    Charging25W wired, 50% in 30 min 15W wireless 4.5W reverse wireless30W wired45W wired 18W reverse wired25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
    Battery technologySi/C Li-Ion
    Reverse charging18W reverse wired

    Software

    Software specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    Operating systemAndroid 12, upgradable to Android 16, One UI 8Android 14Android 15, up to 4 major OS updates, HyperOS 2Android 11, up to 4 major OS updates, One UI 7

    Network

    Network specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    NetworkGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / CDMA / HSPA / LTE / 5GGSM / HSPA / LTEGSM / CDMA / HSPA / EVDO / LTE / 5G
    SIMNano-SIM + eSIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM· Nano-SIM + eSIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
    2G bandsGSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900GSM 850 / 900 / 1800 / 1900; CDMA 800GSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900 & TD-SCDMA
    3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DOHSDPA 850 / 900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO
    4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66LTE1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 38, 40, 41, 661, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G996U1 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-G996B
    5G bands1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International SA/NSA/Sub6/mmWave - USASA/NSA/Sub62, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G996U1 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G996B
    Network speedHSPA, LTE (6CA), 5GHSPA, LTE, 5GHSPA, LTEHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)

    Connectivity

    Connectivity specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    NFCYesYesYes (market/region dependent)Yes
    Bluetooth5.2, A2DP, LEYes5.3, A2DP, LE5.0, A2DP, LE
    Wi-FiWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectYesWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
    PositioningGPS, GLONASS, GALILEO, BDSGPSGPS, GALILEO, GLONASS, QZSS, BDSGPS, GLONASS, BDS, GALILEO
    RadioNoNoNoFM radio (Snapdragon model only; market/operator dependent)
    USBUSB Type-C 2.0, OTGUSB Type-CUSB Type-C 2.0, OTGUSB Type-C 3.2, OTG
    InfraredYes
    Ultra Wideband (UWB)Supported

    Durability

    Durability specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    Water resistanceIP65 dust tight and water resistant (low pressure water jets)

    Features

    Features specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometerFingerprint (under display, optical); unspecified sensorsFingerprint (under display, optical), accelerometer, proximity, gyro, compassFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
    ColorsOlivine, Surf, GrayBlack, Glacier Blue, Titanium
    Desktop modeSamsung DeX, Samsung Wireless DeX (desktop experience support)

    Audio

    Audio specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    LoudspeakersYes, with stereo speakersYesYes, with stereo speakers (with Dolby Atmos)Yes, with stereo speakers
    3.5 mm headphone jackNoNoNoNo
    Audio featuresHigh-bitrate audio support24-bit/192kHz Hi-Res audioHigh-bitrate audio support

    Refurbished unit information

    Refurbished unit information specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    ConditionRefurbished / EX-UKRefurbished / EX-UK

    Tests

    tests specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    Measured performanceAnTuTu: 414497 (v10) GeekBench: 1994 (v6) 3DMark: 378 (Wild Life Extreme)
    Measured display1350 nits max brightness (measured)
    Measured loudspeaker-22.5 LUFS (Excellent)
    Measured battery enduranceActive use score 16:24h

    EU label

    EU label specifications comparison
    SpecificationSamsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoRedmi Note 15 Pro 4GSamsung Galaxy S21 Plus Refurbished
    EnergyClass B
    Battery62:38h endurance, 1000 cycles
    Free fallClass A (270 falls)
    RepairabilityClass C

    Specs

    General

    Samsung Galaxy Z Flip4 Refurbished — General
    BrandSamsung
    ModelGalaxy Z Flip4
    Announced2022, August 10
    Device type / form familySmartphone
    Release statusAvailable. Released 2022, August 25
    Model numbersSM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W, SM-F7210

    Design

    Samsung Galaxy Z Flip4 Refurbished — Design
    DimensionsUnfolded: 165.2 x 71.9 x 6.9 mm Folded: 84.9 x 71.9 x 15.9-17.1 mm
    Weight187 g (6.60 oz)
    Build materialsPlastic front (unfolded), glass back (Gorilla Glass Victus+), aluminum frame

    Display

    Samsung Galaxy Z Flip4 Refurbished — Display
    DisplayFoldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak); 6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)
    Screen resolution1080 x 2640 pixels (~426 ppi density)
    Display featuresFoldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)

    Performance

    Samsung Galaxy Z Flip4 Refurbished — Performance
    ProcessorQualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
    CPUOcta-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
    GPUAdreno 730

    Memory & Storage

    Samsung Galaxy Z Flip4 Refurbished — Memory & Storage
    RAM8GB
    Storage512GB
    Storage technologyUFS 3.1
    Expandable storageNo

    Cameras

    Samsung Galaxy Z Flip4 Refurbished — Cameras
    Rear camera12 MP, f/1.8, 24mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 12 MP, f/2.2, 13mm, 123˚ (ultrawide), 1/3.06", 1.12µm
    Front camera10 MP, f/2.4, 26mm (wide), 1/3.0", 1.22µm
    Rear camera featuresLED flash, HDR, panorama
    Rear camera video4K@30/60fps, 1080p@60/240fps, HDR10+
    Front camera featuresHDR
    Front camera video4K@30fps

    Battery & Charging

    Samsung Galaxy Z Flip4 Refurbished — Battery & Charging
    BatteryLi-Po 3700 mAh
    Charging25W wired, 50% in 30 min 15W wireless 4.5W reverse wireless

    Software

    Samsung Galaxy Z Flip4 Refurbished — Software
    Operating systemAndroid 12, upgradable to Android 16, One UI 8

    Network

    Samsung Galaxy Z Flip4 Refurbished — Network
    NetworkGSM / CDMA / HSPA / EVDO / LTE / 5G
    SIMNano-SIM + eSIM
    2G bandsGSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900
    3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO
    4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66
    5G bands1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International SA/NSA/Sub6/mmWave - USA
    Network speedHSPA, LTE (6CA), 5G

    Connectivity

    Samsung Galaxy Z Flip4 Refurbished — Connectivity
    NFCYes
    Bluetooth5.2, A2DP, LE
    Wi-FiWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
    PositioningGPS, GLONASS, GALILEO, BDS
    RadioNo
    USBUSB Type-C 2.0, OTG

    Features

    Samsung Galaxy Z Flip4 Refurbished — Features
    SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer

    Audio

    Samsung Galaxy Z Flip4 Refurbished — Audio
    LoudspeakersYes, with stereo speakers
    3.5 mm headphone jackNo
    Audio featuresHigh-bitrate audio support

    Design and durability

    Samsung Galaxy Z Flip4 Refurbished — Design and durability
    Form factorFoldable smartphone

    Main display

    Samsung Galaxy Z Flip4 Refurbished — Main display
    Display technologyFoldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)
    Display size6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)
    Refresh rate120Hz

    Cover display

    Samsung Galaxy Z Flip4 Refurbished — Cover display
    Cover displaySuper AMOLED, 1.9 inches, 260 x 512 pixels (Gorilla Glass Victus+)

    Refurbished unit information

    Samsung Galaxy Z Flip4 Refurbished — Refurbished unit information
    ConditionRefurbished / EX-UK
    WarrantyNo warranty provided

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