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Smartphone comparison

Samsung Galaxy Z Flip4 Refurbished vs Redmi Note 15 Pro 4G

Compare cameras, battery, screen and everyday features.

Compared products
01Selected
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
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02
Redmi Note 15 Pro 4G

Redmi Note 15 Pro 4G

  • 195 g.
  • Screen: 1080 x 2392 pixels (~388 ppi density).
  • Mediatek Helio G200 Ultra (6 nm) processor.
  • Storage: UFS 2.2.
  • 6,500 mAh battery capacity.
KSh 38,500In Stock
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Motorola S50 NeoKSh 37,500
Samsung Galaxy S21 Plus RefurbishedKSh 38,000
Samsung Galaxy A37 5GKSh 38,500
Google Pixel 7KSh 39,500
Motorola G77 5GKSh 40,500
Redmi Note 15 Pro 5GKSh 38,000
Nothing Phone 3aKSh 39,300
2 of 4 products

Our quick verdict

The Redmi Note 15 Pro 4G has a much bigger battery (6,500 mAh), charges faster (45 W) and runs newer Android 15 with 4 OS upgrades promised, while the Samsung Galaxy Z Flip4 Refurbished offers 1080p recording at up to 240 fps, is slimmer and offers newer Wi-Fi 6.

Weight

Samsung Galaxy Z Flip4 Refurbished
187 g
Redmi Note 15 Pro 4G
195 g

Display

Samsung Galaxy Z Flip4 Refurbished
1080 x 2640 pixels (~426 ppi density)
Redmi Note 15 Pro 4G
1080 x 2392 pixels (~388 ppi density)

Performance

Samsung Galaxy Z Flip4 Refurbished
Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm) processor
Redmi Note 15 Pro 4G
Mediatek Helio G200 Ultra (6 nm) processor

Storage

Samsung Galaxy Z Flip4 Refurbished
UFS 3.1
Redmi Note 15 Pro 4G
UFS 2.2

Battery capacity

Samsung Galaxy Z Flip4 Refurbished
3,700 mAh battery capacity
Redmi Note 15 Pro 4G
6,500 mAh battery capacity

Key differences

The main differences to help you choose.

Samsung Galaxy Z Flip4 Refurbished

  • Newer Wi-Fi 6 (vs Wi-Fi 5).
  • Slimmer: 6.9 mm thick (vs 8 mm).
  • Higher frame rates for 1080p recording: up to 240 fps (vs 60 fps).
  • 4K video recording (vs 1080p).
  • 15 W wireless charging.

Redmi Note 15 Pro 4G

  • Bigger battery: 6,500 mAh (vs 3,700 mAh).
  • Faster rated wired charging: 45 W (vs 25 W).
  • Higher-resolution main camera: 200 MP (vs 12 MP).
  • Newer Android 15 (vs Android 12).
  • 4 OS upgrades promised.
  • Brighter display: up to 3,200 nits (vs 1,200).

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.

More topicsFewer topics
6 priorities selected.
How each product answers the selected priorities
PrioritySamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
Display6.7-inch OLED display, 120 Hz, 426 ppi6.77-inch OLED display, 120 Hz, 388 ppi
Camera12 MP main camera with OIS200 MP main camera with OIS
PerformanceQualcomm Snapdragon 8+ Gen 1 processorMediatek Helio G200 Ultra processor
Storage512 GB storageUp to 512 GB storage
Battery capacity3,700 mAh battery6,500 mAh battery
Charging25 W wired, 15 W wireless charging45 W wired charging

Detailed comparison

Explore the full specifications, section by section.

General

General specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
BrandSamsungRedmi
ModelGalaxy Z Flip4Redmi Note 15 Pro 4G
Announced2022, August 102025, December 18
Device type / form familySmartphone—
Release statusAvailable. Released 2022, August 25Available. Released 2026, January 06
Model numbersSM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W, SM-F721025100RA69G

Design

Design specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
DimensionsUnfolded: 165.2 x 71.9 x 6.9 mm Folded: 84.9 x 71.9 x 15.9-17.1 mm163.2 x 76.3 x 8 mm (6.43 x 3.00 x 0.31 in)
Weight187 g (6.60 oz)195 g (6.88 oz)
Build materialsPlastic front (unfolded), glass back (Gorilla Glass Victus+), aluminum frameGlass front (Gorilla Glass Victus 2), plastic back
Form factorFoldable smartphone—

Display

Display specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
DisplayFoldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak); 6.7 inches, 101.5 cm2 (~85.4% 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)
Cover displaySuper AMOLED, 1.9 inches, 260 x 512 pixels (Gorilla Glass Victus+)—
Screen resolution1080 x 2640 pixels (~426 ppi density)1080 x 2392 pixels (~388 ppi density)
Display featuresFoldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)68B colors, 120Hz, 3840Hz PWM, 3200 nits (peak)
Display technologyFoldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)AMOLED
Display size6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)6.77 inches
Refresh rate120Hz120Hz
Display protection—Corning Gorilla Glass Victus 2
Brightness—3200 nits (peak)
Pixel density—388 ppi
Screen-to-body ratio—89.1% screen-to-body ratio

Performance

Performance specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
ProcessorQualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)Mediatek Helio G200 Ultra (6 nm)
CPUOcta-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPUAdreno 730Mali-G57 MC2 (1.1GHz)
User interface—HyperOS 2
Software support—up to 4 major OS updates
Process node—6 nm

Memory & Storage

Memory & Storage specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
RAM8GB8GB, 12GB
Storage512GB256GB, 512GB
Storage technologyUFS 3.1UFS 2.2
Expandable storageNomicroSDXC (uses shared SIM slot)
Memory configurations—256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM

Cameras

Cameras specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
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", 1.12µm200 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", 1.12µm
Front camera10 MP, f/2.4, 26mm (wide), 1/3.0", 1.22µm32 MP, f/2.2, 22mm (wide), 1/3.6", 0.61µm
Rear camera featuresLED flash, HDR, panoramaLED flash, HDR, panorama
Rear camera video4K@30/60fps, 1080p@60/240fps, HDR10+1080p@30/60fps, gyro-EIS
Front camera featuresHDR—
Front camera video4K@30fps1080p@30fps

Battery & Charging

Battery & Charging specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
BatteryLi-Po 3700 mAhSi/C Li-Ion 6500 mAh
Charging25W wired, 50% in 30 min 15W wireless 4.5W reverse wireless45W wired 18W reverse wired
Battery technology—Si/C Li-Ion
Reverse charging—18W reverse wired

Software

Software specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
Operating systemAndroid 12, upgradable to Android 16, One UI 8Android 15, up to 4 major OS updates, HyperOS 2

Network

Network specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
NetworkGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / HSPA / LTE
SIMNano-SIM + eSIMNano-SIM + Nano-SIM
2G bandsGSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DOHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 661, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 38, 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), 5GHSPA, LTE

Connectivity

Connectivity specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
NFCYesYes (market/region dependent)
Bluetooth5.2, A2DP, LE5.3, 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, dual-band, Wi-Fi Direct
PositioningGPS, GLONASS, GALILEO, BDSGPS, GALILEO, GLONASS, QZSS, BDS
RadioNoNo
USBUSB Type-C 2.0, OTGUSB Type-C 2.0, OTG
Infrared—Yes

Durability

Durability specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
Water resistance—IP65 dust tight and water resistant (low pressure water jets)

Features

Features specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometerFingerprint (under display, optical), accelerometer, proximity, gyro, compass
Colors—Black, Glacier Blue, Titanium

Audio

Audio specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
LoudspeakersYes, with stereo speakersYes, with stereo speakers (with Dolby Atmos)
3.5 mm headphone jackNoNo
Audio featuresHigh-bitrate audio support24-bit/192kHz Hi-Res audio

Refurbished unit information

Refurbished unit information specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
ConditionRefurbished / EX-UK—

Tests

Tests specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
Measured performance—AnTuTu: 414497 (v10) GeekBench: 1994 (v6) 3DMark: 378 (Wild Life Extreme)
Measured display—1350 nits max brightness (measured)
Measured loudspeaker—-22.5 LUFS (Excellent)
Measured battery endurance—Active use score 16:24h

EU label

EU label specifications comparison
SpecificationSamsung Galaxy Z Flip4 RefurbishedRedmi Note 15 Pro 4G
Energy—Class B
Battery—62:38h endurance, 1000 cycles
Free fall—Class A (270 falls)
Repairability—Class C

Similarities

  • Both have 120 Hz displays.
  • Both have optical image stabilisation.
  • Both have NFC.
  • Both have stereo speakers.
  • Both charge over USB-C.
  • Both offer up to 512 GB of storage.

In summary

For most buyers the Redmi Note 15 Pro 4G is the better buy; the Samsung Galaxy Z Flip4 Refurbished makes sense if you want 1080p recording at up to 240 fps.

Back to compared products ↑

In-stock alternatives

Samsung Galaxy Note10 Plus 5G RefurbishedFor Samsung Galaxy Z Flip4 RefurbishedSamsung Galaxy Note10 Plus 5G RefurbishedView product ↗Samsung Galaxy S21 Plus RefurbishedFor Samsung Galaxy Z Flip4 RefurbishedSamsung Galaxy S21 Plus RefurbishedView product ↗Redmi Note 15 Pro 5GFor Redmi Note 15 Pro 4GRedmi Note 15 Pro 5GView product ↗

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