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Smartphone comparison

Samsung Galaxy S21 Plus Refurbished vs Samsung Galaxy Z Flip4 Refurbished

Compare cameras, battery, screen and everyday features.

Compared products
01Selected
Samsung Galaxy S21 Plus Refurbished

Samsung Galaxy S21 Plus Refurbished

  • About 6.7 inch screen.
  • Mali-G78 MP14 - International, Adreno 660 - USA/China graphics.
  • 8 GB RAM in this version.
  • 256 GB storage in this version.
  • 4,800 mAh battery capacity.
KSh 38,000In Stock
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02
Samsung Galaxy Z Flip4 Refurbished

Samsung Galaxy Z Flip4 Refurbished

  • 187 g.
  • About 6.7 inch screen.
  • Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm) processor.
  • 8 GB RAM in this version.
  • 512 GB storage in this version.
KSh 39,000In Stock
Add to cart

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2 spaces available

Samsung Galaxy S22 RefurbishedKSh 37,000
Samsung Galaxy Note10 Plus 5G RefurbishedKSh 38,500
Google Pixel 7KSh 39,500
Motorola S50 NeoKSh 37,500
Nothing Phone 3aKSh 39,300
Motorola ThinkPhone 25 5GKSh 36,000
Redmi Note 15 Pro 5GKSh 38,000
2 of 4 products

Our quick verdict

With the same 6.7-inch OLED screen, 8 GB of RAM and 12 MP main camera, the Samsung Galaxy S21 Plus Refurbished has a bigger battery (4,800 mAh), optical zoom and 8K video recording and offers FM radio (Snapdragon model only, while the Samsung Galaxy Z Flip4 Refurbished has more storage (512 GB) and is lighter (187 g) and slimmer.

Display

Samsung Galaxy S21 Plus Refurbished
1080 x 2400 pixels, 20:9 ratio (~394 ppi density)
Samsung Galaxy Z Flip4 Refurbished
1080 x 2640 pixels (~426 ppi density)

Performance

Samsung Galaxy S21 Plus Refurbished
Mali-G78 MP14 - International Adreno 660 - USA/China graphics
Samsung Galaxy Z Flip4 Refurbished
Adreno 730 graphics

Storage

Samsung Galaxy S21 Plus Refurbished
256 GB storage in this version
Samsung Galaxy Z Flip4 Refurbished
512 GB storage in this version

Battery capacity

Samsung Galaxy S21 Plus Refurbished
4,800 mAh battery capacity
Samsung Galaxy Z Flip4 Refurbished
3,700 mAh battery capacity

Weight

Samsung Galaxy S21 Plus Refurbished
200 g
Samsung Galaxy Z Flip4 Refurbished
187 g

Key differences

The main differences to help you choose.

Samsung Galaxy S21 Plus Refurbished

  • Bigger battery: 4,800 mAh (vs 3,700 mAh).
  • Telephoto camera with 1.1x optical zoom.
  • FM radio (Snapdragon model only.
  • 8K video recording (vs 4K).
  • Lower price: KSh 38,000 (vs KSh 39,000).

Samsung Galaxy Z Flip4 Refurbished

  • More storage: 512 GB (vs 256 GB).
  • Newer Bluetooth 5.2 (vs 5.0).
  • Lighter: 187 g (vs 200 g).
  • Slimmer: 6.9 mm thick (vs 7.8 mm).
  • Newer Android 12 (vs Android 11).

What matters most to you?

Choose any priorities

How each product answers the questions buyers ask most. Tick a topic to add it, untick one to hide it.

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6 priorities selected.
How each product answers the selected priorities
PrioritySamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
Display6.7-inch OLED display, 120 Hz, 394 ppi6.7-inch OLED display, 120 Hz, 426 ppi
Camera12 MP main camera with OIS, plus a 1.1x telephoto camera12 MP main camera with OIS
PerformanceExynos 2100 processorQualcomm Snapdragon 8+ Gen 1 processor
Storage256 GB storage512 GB storage
Battery capacity4,800 mAh battery3,700 mAh battery
Weight200 g187 g

Detailed comparison

Explore the full specifications, section by section.

General

General specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
BrandSamsungSamsung
ModelGalaxy S21 PlusGalaxy Z Flip4
Announced2021, January 142022, August 10
Device type / form familySmartphoneSmartphone
Release statusAvailable. Released 2021, January 29Available. Released 2022, August 25
Model numbersSM-G996B, SM-G996B/DS, SM-G996U, SM-G996U1, SM-G996W, SM-G996N, SM-G9960SM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W, SM-F7210

Design

Design specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
Dimensions161.5 x 75.6 x 7.8 mm (6.36 x 2.98 x 0.31 in)Unfolded: 165.2 x 71.9 x 6.9 mm Folded: 84.9 x 71.9 x 15.9-17.1 mm
Weight200 g (Sub6), 202 g (mmWave) (7.05 oz)187 g (6.60 oz)
Build materialsGlass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum framePlastic front (unfolded), glass back (Gorilla Glass Victus+), aluminum frame
Form factorTouchscreen smartphoneFoldable smartphone

Display

Display specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
DisplayDynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak); 6.7 inches, 107.8 cm^{2} (~88.3% screen-to-body ratio)Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak); 6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)
Screen resolution1080 x 2400 pixels, 20:9 ratio (~394 ppi density)1080 x 2640 pixels (~426 ppi density)
Display protectionCorning Gorilla Glass Victus—
Display featuresDynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)
Display technologyDynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)
Display size6.7 inches, 107.8 cm^{2} (~88.3% screen-to-body ratio)6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)
Refresh rate120Hz120Hz
Cover display—Super AMOLED, 1.9 inches, 260 x 512 pixels (Gorilla Glass Victus+)

Performance

Performance specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
ProcessorExynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/ChinaQualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
CPUOcta-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/ChinaOcta-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
GPUMali-G78 MP14 - International Adreno 660 - USA/ChinaAdreno 730

Memory & Storage

Memory & Storage specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
RAM8GB8GB
Storage256GB512GB
Storage technologyUFS 3.1UFS 3.1
Expandable storageNoNo

Cameras

Cameras specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
Rear camera12 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 video12 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/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF10 MP, f/2.4, 26mm (wide), 1/3.0", 1.22µm
Rear camera featuresLED flash, auto-HDR, panoramaLED flash, HDR, panorama
Rear camera video8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS4K@30/60fps, 1080p@60/240fps, HDR10+
Front camera featuresHDRHDR
Front camera video4K@30/60fps, 1080p@30fps4K@30fps

Battery & Charging

Battery & Charging specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
BatteryLi-Ion 4800 mAhLi-Po 3700 mAh
Charging25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless25W wired, 50% in 30 min 15W wireless 4.5W reverse wireless

Software

Software specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
Operating systemAndroid 11, up to 4 major OS updates, One UI 7Android 12, upgradable to Android 16, One UI 8

Network

Network specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
NetworkGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
SIM· Nano-SIM + eSIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time)Nano-SIM + eSIM
2G bandsGSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900 & TD-SCDMAGSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DOHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO
4G bands1, 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-G996B1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66
5G bands2, 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-G996B1, 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 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)HSPA, LTE (6CA), 5G

Connectivity

Connectivity specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
NFCYesYes
Bluetooth5.0, A2DP, LE5.2, A2DP, LE
Wi-FiWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
PositioningGPS, GLONASS, BDS, GALILEOGPS, GLONASS, GALILEO, BDS
RadioFM radio (Snapdragon model only; market/operator dependent)No
USBUSB Type-C 3.2, OTGUSB Type-C 2.0, OTG
Ultra Wideband (UWB)Supported—

Features

Features specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
SensorsFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometerFingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer
Desktop modeSamsung DeX, Samsung Wireless DeX (desktop experience support)—

Audio

Audio specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
LoudspeakersYes, with stereo speakersYes, with stereo speakers
3.5 mm headphone jackNoNo
Audio featuresHigh-bitrate audio supportHigh-bitrate audio support

Refurbished unit information

Refurbished unit information specifications comparison
SpecificationSamsung Galaxy S21 Plus RefurbishedSamsung Galaxy Z Flip4 Refurbished
ConditionRefurbished / EX-UKRefurbished / EX-UK

Similarities

  • Both have 8 GB RAM.
  • Both have 120 Hz displays.
  • Both have optical image stabilisation.
  • Both support Wi-Fi 6.
  • Both have NFC.
  • Both have an aluminium frame.

In summary

For most buyers the Samsung Galaxy S21 Plus Refurbished is the better buy; the Samsung Galaxy Z Flip4 Refurbished makes sense if you want more storage.

Back to compared products ↑

In-stock alternatives

Samsung Galaxy Note10 Plus 5G RefurbishedFor Samsung Galaxy S21 Plus RefurbishedSamsung Galaxy Note10 Plus 5G RefurbishedView product ↗Samsung Galaxy S22 RefurbishedFor Samsung Galaxy S21 Plus RefurbishedSamsung Galaxy S22 RefurbishedView product ↗Redmi Note 15 Pro 4GFor Samsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4GView product ↗Motorola S50 NeoFor Samsung Galaxy Z Flip4 RefurbishedMotorola S50 NeoView product ↗

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