Samsung Galaxy Z Flip4 Refurbished Customer Reviews
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Samsung Galaxy Z Flip4 Refurbished
Motorola S50 Neo
Redmi Note 15 Pro 4G
Samsung Galaxy S21 Plus Refurbished| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Brand | Samsung | Motorola | Redmi | Samsung |
| Model | Galaxy Z Flip4 | Motorola S50 Neo | Redmi Note 15 Pro 4G | Galaxy S21 Plus |
| Announced | 2022, August 10 | 2024, June 25 | 2025, December 18 | 2021, January 14 |
| Device type / form family | Smartphone | Smartphone | Smartphone | |
| Release status | Available. Released 2022, August 25 | Available. Released 2024, June 28 | Available. Released 2026, January 06 | Available. Released 2021, January 29 |
| Model numbers | SM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W, SM-F7210 | XT2427-4 | 25100RA69G | SM-G996B, SM-G996B/DS, SM-G996U, SM-G996U1, SM-G996W, SM-G996N, SM-G9960 |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Dimensions | Unfolded: 165.2 x 71.9 x 6.9 mm Folded: 84.9 x 71.9 x 15.9-17.1 mm | 161.9 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) |
| Weight | 187 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 materials | Plastic front (unfolded), glass back (Gorilla Glass Victus+), aluminum frame | Glass front, plastic frame, plastic back or silicone polymer (eco leather) back | Glass front (Gorilla Glass Victus 2), plastic back | Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame |
| Form factor | Foldable smartphone | Touchscreen smartphone |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Display | Foldable 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 display | Super AMOLED, 1.9 inches, 260 x 512 pixels (Gorilla Glass Victus+) | |||
| Screen resolution | 1080 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 features | Foldable 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 technology | Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak) | P-OLED | AMOLED | Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak) |
| Display size | 6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio) | 6.7 inches, 108.4 cm2 (~91.6% screen-to-body ratio) | 6.77 inches | 6.7 inches, 107.8 cm^{2} (~88.3% screen-to-body ratio) |
| Refresh rate | 120Hz | 120Hz | 120Hz | 120Hz |
| Brightness | 1600 nits (peak) | 3200 nits (peak) | ||
| HDR formats | HDR10+ | |||
| Pixel density | ~393 ppi | 388 ppi | ||
| Aspect ratio | 20:9 ratio | |||
| Screen-to-body ratio | ~91.6% screen-to-body ratio | 89.1% screen-to-body ratio | ||
| Display protection | Corning Gorilla Glass Victus 2 | Corning Gorilla Glass Victus |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Processor | Qualcomm 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 |
| CPU | Octa-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 |
| GPU | Adreno 730 | Adreno 619 | Mali-G57 MC2 (1.1GHz) | Mali-G78 MP14 - International Adreno 660 - USA/China |
| Process node | 6 nm | 6 nm | ||
| User interface | HyperOS 2 | |||
| Software support | up to 4 major OS updates |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| RAM | 8GB | 12GB | 8GB, 12GB | 8GB |
| Storage | 512GB | 256GB | 256GB, 512GB | 256GB |
| Storage technology | UFS 3.1 | UFS 2.x | UFS 2.2 | UFS 3.1 |
| Expandable storage | No | microSDXC | microSDXC (uses shared SIM slot) | No |
| Memory configurations | 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM | 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Rear camera | 12 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 | 50 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", 1.12µm | 12 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 camera | 10 MP, f/2.4, 26mm (wide), 1/3.0", 1.22µm | 32 MP, f/2.5, (wide) | 32 MP, f/2.2, 22mm (wide), 1/3.6", 0.61µm | 10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF |
| Rear camera features | LED flash, HDR, panorama | LED flash, HDR, panorama | LED flash, HDR, panorama | LED flash, auto-HDR, panorama |
| Rear camera video | 4K@30/60fps, 1080p@60/240fps, HDR10+ | 1080p@30/60fps | 1080p@30/60fps, gyro-EIS | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS |
| Front camera features | HDR | HDR | ||
| Front camera video | 4K@30fps | 1080p@30fps | 1080p@30fps | 4K@30/60fps, 1080p@30fps |
| Wide camera | 50 MP, f/1.8 (wide), 1/1.95", 0.8µm, PDAF, OIS | |||
| Ultra-wide camera | 8 MP, f/2.2, 118˚ (ultrawide) |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Battery | Li-Po 3700 mAh | 5000 mAh | Si/C Li-Ion 6500 mAh | Li-Ion 4800 mAh |
| Charging | 25W wired, 50% in 30 min 15W wireless 4.5W reverse wireless | 30W wired | 45W wired 18W reverse wired | 25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless |
| Battery technology | Si/C Li-Ion | |||
| Reverse charging | 18W reverse wired |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Operating system | Android 12, upgradable to Android 16, One UI 8 | Android 14 | Android 15, up to 4 major OS updates, HyperOS 2 | Android 11, up to 4 major OS updates, One UI 7 |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Network | GSM / CDMA / HSPA / EVDO / LTE / 5G | GSM / CDMA / HSPA / LTE / 5G | GSM / HSPA / LTE | GSM / CDMA / HSPA / EVDO / LTE / 5G |
| SIM | Nano-SIM + eSIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM | · Nano-SIM + eSIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time) |
| 2G bands | GSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900 | GSM 850 / 900 / 1800 / 1900; CDMA 800 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900 & TD-SCDMA |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO | HSDPA 850 / 900 / 2100 | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 | LTE | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 38, 40, 41, 66 | 1, 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 bands | 1, 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 | SA/NSA/Sub6 | 2, 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 speed | HSPA, LTE (6CA), 5G | HSPA, LTE, 5G | HSPA, LTE | HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL) |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| NFC | Yes | Yes | Yes (market/region dependent) | Yes |
| Bluetooth | 5.2, A2DP, LE | Yes | 5.3, A2DP, LE | 5.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct | Yes | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
| Positioning | GPS, GLONASS, GALILEO, BDS | GPS | GPS, GALILEO, GLONASS, QZSS, BDS | GPS, GLONASS, BDS, GALILEO |
| Radio | No | No | No | FM radio (Snapdragon model only; market/operator dependent) |
| USB | USB Type-C 2.0, OTG | USB Type-C | USB Type-C 2.0, OTG | USB Type-C 3.2, OTG |
| Infrared | Yes | |||
| Ultra Wideband (UWB) | Supported |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Water resistance | IP65 dust tight and water resistant (low pressure water jets) |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer | Fingerprint (under display, optical); unspecified sensors | Fingerprint (under display, optical), accelerometer, proximity, gyro, compass | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer |
| Colors | Olivine, Surf, Gray | Black, Glacier Blue, Titanium | ||
| Desktop mode | Samsung DeX, Samsung Wireless DeX (desktop experience support) |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Loudspeakers | Yes, with stereo speakers | Yes | Yes, with stereo speakers (with Dolby Atmos) | Yes, with stereo speakers |
| 3.5 mm headphone jack | No | No | No | No |
| Audio features | High-bitrate audio support | 24-bit/192kHz Hi-Res audio | High-bitrate audio support |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Condition | Refurbished / EX-UK | Refurbished / EX-UK |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| 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 |
| Specification | Samsung Galaxy Z Flip4 Refurbished | Motorola S50 Neo | Redmi Note 15 Pro 4G | Samsung Galaxy S21 Plus Refurbished |
|---|---|---|---|---|
| Energy | Class B | |||
| Battery | 62:38h endurance, 1000 cycles | |||
| Free fall | Class A (270 falls) | |||
| Repairability | Class C |
| Brand | Samsung |
|---|---|
| Model | Galaxy Z Flip4 |
| Announced | 2022, August 10 |
| Device type / form family | Smartphone |
| Release status | Available. Released 2022, August 25 |
| Model numbers | SM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W, SM-F7210 |
| Dimensions | Unfolded: 165.2 x 71.9 x 6.9 mm Folded: 84.9 x 71.9 x 15.9-17.1 mm |
|---|---|
| Weight | 187 g (6.60 oz) |
| Build materials | Plastic front (unfolded), glass back (Gorilla Glass Victus+), aluminum frame |
| Display | Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak); 6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio) |
|---|---|
| Screen resolution | 1080 x 2640 pixels (~426 ppi density) |
| Display features | Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak) |
| Processor | Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm) |
|---|---|
| CPU | Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510) |
| GPU | Adreno 730 |
| RAM | 8GB |
|---|---|
| Storage | 512GB |
| Storage technology | UFS 3.1 |
| Expandable storage | No |
| Rear camera | 12 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 camera | 10 MP, f/2.4, 26mm (wide), 1/3.0", 1.22µm |
| Rear camera features | LED flash, HDR, panorama |
| Rear camera video | 4K@30/60fps, 1080p@60/240fps, HDR10+ |
| Front camera features | HDR |
| Front camera video | 4K@30fps |
| Battery | Li-Po 3700 mAh |
|---|---|
| Charging | 25W wired, 50% in 30 min 15W wireless 4.5W reverse wireless |
| Operating system | Android 12, upgradable to Android 16, One UI 8 |
|---|
| Network | GSM / CDMA / HSPA / EVDO / LTE / 5G |
|---|---|
| SIM | Nano-SIM + eSIM |
| 2G bands | GSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 |
| 5G bands | 1, 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 speed | HSPA, LTE (6CA), 5G |
| NFC | Yes |
|---|---|
| Bluetooth | 5.2, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
| Positioning | GPS, GLONASS, GALILEO, BDS |
| Radio | No |
| USB | USB Type-C 2.0, OTG |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer |
|---|
| Loudspeakers | Yes, with stereo speakers |
|---|---|
| 3.5 mm headphone jack | No |
| Audio features | High-bitrate audio support |
| Form factor | Foldable smartphone |
|---|
| Display technology | Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak) |
|---|---|
| Display size | 6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio) |
| Refresh rate | 120Hz |
| Cover display | Super AMOLED, 1.9 inches, 260 x 512 pixels (Gorilla Glass Victus+) |
|---|
| Condition | Refurbished / EX-UK |
|---|---|
| Warranty | No warranty provided |
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