In depth comparison and review of Samsung Galaxy Z Fold2 5G and Vivo X51 5G. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-F916B | V2006 | |
| Form Factor | Folder - touch screen, dual screen | Touch | |
| Height | 159.2 mm | 158.46 mm | Samsung Galaxy Z Fold2 5G has greater height than Vivo X51 5G. |
| Width | 68 mm | 72.8 mm | Vivo X51 5G has greater width than Samsung Galaxy Z Fold2 5G. |
| Depth | 16.8 mm | 8.04 mm | Vivo X51 5G is narrower than Samsung Galaxy Z Fold2 5G. |
| Weight | 282 g | 181.5 g | Vivo X51 5G is lighter than Samsung Galaxy Z Fold2 5G. |
| Dimensions Details | Folded - 68 mm x 16.8 mm x 159.2 mm Unfolded - 128.2 mm x 6.9 mm x 159.2 mm |
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| Body Colour | Thom Browne Gray | Mystic black, metallic blue hinge | Mystic bronze, metallic blue hinge | Mystic black, metallic gold hinge | Mystic bronze, metallic gold hinge | Mystic black, metallic red hinge | Mystic bronze, metallic red hinge | Mystic black, metallic silver hinge | Mystic bronze, metallic silver hinge | Mystic black | Mystic bronze | Alpha grey | |
| Body Material | Gorilla glass 6 | - | |
| Waterproof (Water-resistant) | - | - | |
| IP rating | - | IP53 | |
| SAR Value | 0.291 W/kg (head, LTE), 0.859 W/kg (head, 5G), 1.453 W/kg (body) | 1.205 W/kg (head), 1.239 W/kg (body), 3.086 W/kg (limb) | |
| Connector Type | USB Type-C - 24 pin USB-C | USB Type-C - 24 pin USB-C | |
| SIM Card Type (Size) | Nano SIM, Electronic SIM card (e-SIM) | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | Infinity Flex Dynamic AMOLED 2X | AMOLED | |
| Foldable Display | Yes | - | |
| Display Design | Inward folding | - | |
| Screen Size (Display Size) | 7.6" | 6.56" | Samsung Galaxy Z Fold2 5G has larger screen size than Vivo X51 5G. |
| Screen Resolution (Display Resolution) | 2208 x 1768 pixels | 2376 x 1080 pixels | Samsung Galaxy Z Fold2 5G has better screen resolution than Vivo X51 5G. |
| Display Format | QXGA+ | - | |
| Pixel Density | 373 ppi | 398 ppi | Vivo X51 5G has better pixel density than Samsung Galaxy Z Fold2 5G. |
| Aspect Ratio | 22.5:18 | 19.8:9 | |
| Max Brightness | - | 500 cd/m² | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| HDR | Yes | - | Samsung Galaxy Z Fold2 5G has HDR. |
| HDR Technology | HDR10+ | - | |
| Display Refresh Rate | 120 Hz | - | |
| Display Features | Flex screen | - | |
| Display Protection (Screen Protector) | Samsung Ultra Thin Glass, Corning Gorilla Glass Victus (scratch resistant glass) | - |
| SECOND DISPLAY |
|---|
| Second Display Type | OLED display - colour | - | |
|---|---|---|---|
| Second Display Screen Size | 6.2" | - | |
| Second Display Resolution | 2260 x 816 pixels | - | |
| Second Display Colour Depth | 16.7 million colours | - |
| UNFOLDED DISPLAY |
|---|
| Unfolded Display Screen Size | 7.6 in | - | |
|---|---|---|---|
| Unfolded Display Resolution | 2208 x 1768 pixels | - |
| PROCESSOR | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
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| Processor Type (CPU) | - | Qualcomm Snapdragon 765G | |
|---|---|---|---|
| Clock Speed | 3.09 GHz | 2.4 GHz | Samsung Galaxy Z Fold2 5G has higher clock speed than Vivo X51 5G. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| MEMORY | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
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| RAM | 12 GB | 8 GB | Samsung Galaxy Z Fold2 5G has more RAM than Vivo X51 5G. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 256 GB | 256 GB | Both phones have the same internal memory capacity. |
| User Memory | 220.6 GB | - | |
| Memory Interface | UFS 3.1 | - |
| CAMERA | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 4 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 48 Megapixel | Vivo X51 5G has better camera resolution than Samsung Galaxy Z Fold2 5G. |
| Lens Type | Ultra wide-angle lens | - | |
| Lens Aperture | F/2.2 | F/1.6 | Vivo X51 5G has better lens aperture than Samsung Galaxy Z Fold2 5G. |
| Field of View (FoV) | 123 degree(s) | - | |
| Pixel Size | 1.12 μm | - | |
| Optical Image Stabiliser (OIS) | Dual OIS (Optical Image Stabilisation) | - | Samsung Galaxy Z Fold2 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | - | Yes | |
| Optical Zoom | 2x | - | |
| Digital Zoom | 10x | - | |
| Self-Timer Delay | Yes | - | |
| Special Effects | HDR, Grid Line, Motion photos | HDR | |
| Camera Modes | Panorama, Slow motion mode, Pro mode, selfie mode, HYPERLAPSE, Live Focus mode, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Live focus video, Night, Mountain, Single Take, Pro Video, NIGHT HYPERLAPSE | Panorama, Time-lapse mode, Pro mode, Live Photos, AI makeup, Portrait, Super Night mode, astro mode, pro sports mode, DOC mode | |
| Face Recognition (Face ID) | Face detection | - | Samsung Galaxy Z Fold2 5G has face detection. |
| Light Source | High CRI LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps | - | |
| Camera Features (Functions) | Quick Launch, Playback zoom, blink detection, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, location tags, Hyperlapse video support 1080p, Scene Optimiser, Lens smudge, Full view, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Floating shutter button, Super steady, Zoom-In Mic, AR Doodle, Microphone Control, HEVC (High Efficiency Video coding), Dual preview, Auto framing, Flex mode, Capture View mode | 60x Hyper Zoom, Gimbal Super Night Master, Gimbal Super Sport Expert |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 13 Megapixel | Vivo X51 5G has better second camera resolution than Samsung Galaxy Z Fold2 5G. |
|---|---|---|---|
| Lens Type (2nd Camera) | Wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/1.8 | F/2.46 | Samsung Galaxy Z Fold2 5G has better second camera lens aperture than Samsung Galaxy Z Fold2 5G. |
| Field of View (2nd Camera) | 83 degree(s) | - | |
| Pixel Size (2nd Camera) | 1.8 μm | - | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Samsung Galaxy Z Fold2 5G has optical stabilisation of the second camera. |
| Camera Features (2nd Camera) | Super Speed Dual Pixel AF | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 12 Megapixel | 8 Megapixel | Samsung Galaxy Z Fold2 5G has higher resolution third camera than Vivo X51 5G. |
|---|---|---|---|
| Lens Type (3rd Camera) | Telephoto lens | Wide-angle lens | |
| Lens Aperture (3rd Camera) | F/2.4 | F/2.2 | Vivo X51 5G has better third camera lens aperture than Samsung Galaxy Z Fold2 5G. |
| Field of View (3rd Camera) | 45 degree(s) | - | |
| Pixel Size (3rd Camera) | 1 μm | - | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Samsung Galaxy Z Fold2 5G has optical stabilisation of the third camera. |
| Camera Features (3rd Camera) | Phase Detect Auto-Focus (PDAF) | - |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 8 Megapixel | |
|---|---|---|---|
| Lens Type (4th Camera) | - | Telephoto lens | |
| Lens Aperture (4th Camera) | - | F/3.4 |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 2 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 10 Megapixel | 32 Megapixel | Vivo X51 5G has better front camera resolution than Samsung Galaxy Z Fold2 5G. |
| Lens Aperture (Front) | F/2.2 | F/2.45 | Samsung Galaxy Z Fold2 5G has better front lens aperture than Samsung Galaxy Z Fold2 5G. |
| Field of View (Front) | 80 degree(s) | - | |
| Pixel Size (Front) | 1.22 μm | - | |
| Special Effects (Front) | HDR, Grid Line | HDR | |
| Camera Modes (Front) | - | Live Photos, Portrait | |
| Camera Features (Front) | - | 2 x digital zoom |
| SECOND FRONT CAMERA |
|---|
| Sensor Resolution (2nd Front) | 10 Megapixel | - | |
|---|---|---|---|
| Lens Aperture (2nd Front) | F/2.2 | - | |
| Field of View (2nd Front) | 80 degree(s) | - | |
| Pixel Size (2nd Front) | 1.22 μm | - |
| BATTERY AND CHARGING | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
|---|
| Battery Capacity (Battery Size) | 4500 mAh | 4315 mAh | Samsung Galaxy Z Fold2 5G has larger battery capacity than Vivo X51 5G. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 2.0, Samsung Super Fast Charging | - | Samsung Galaxy Z Fold2 5G has fast charging technology. |
| Wireless Charging | Yes | - | Samsung Galaxy Z Fold2 5G can be charged wirelessly. |
| Wireless Charging Standards | WPC, PMA, Qi, Fast Wireless Charging, Wireless PowerShare | - | |
| Talk Time | 1860 minutes | - | |
| Run Time Details | Active online usage (LTE): up to 11 hrs Active online usage (Wi-Fi): up to 11 hrs Playback (wireless video): up to 18 hrs Playback (wireless audio): up to 83 hrs Talk (4G): up to 1860 min |
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| CELLULAR | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
|---|
| Technology | WCDMA (UMTS) / GSM | CDMA2000 1X / GSM / WCDMA (UMTS) | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 5G | Both phones have the same mobile network generation. |
| Operating System | Android 10 | Funtouch OS 10 (based on Android 10) | |
| Intelligent Assistant | Bixby | - | |
| Payment Technology | Samsung Pay | - | |
| Navigation | GPS, GLONASS, BeiDou, Galileo | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
|---|
| Data Transmission | FDD-LTE, TDD-LTE, LAA, 5G NR FR1 | FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 38, Band 39, Band 40, Band 41, Band 66 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 17, Band 18, Band 19, Band 20, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66 | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | N1, n3, n5, n7, n8, n28, n41, n77, n78, n40 | N1, n3, n7, n8, n28, n38, n41, n77, n78 | |
| 5G NR Frequency | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 700APT, TDD TD 2500, TDD TD 3700, TDD TD 3500, TDD 2300 | FDD 2100, FDD 1800, FDD 2600, FDD 900, FDD 700APT, TDD TD 2600, TDD TD 2500, TDD TD 3700, TDD TD 3500 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac, IEEE 802.11a/b/g/n/ac/ax | Wi-Fi | |
| Bluetooth | Bluetooth 5.0 LE | Bluetooth 5.1 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Ultra-Wideband (UWB) | Yes | - | Samsung Galaxy Z Fold2 5G has UWB wireless technology. |
| Messaging Services | SMS, MMS | - |
| MEDIA | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128 | WAV, MPEG 2 Audio, MP3, FLAC, MIDI, APE (Monkey's Audio), AMR-WB, AMR-NB, Vorbis | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 | MKV, AVI, 3GP, TS, MP4 | |
| Sound Enhancements | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound | - | |
| Audio Amplifier | - | AK4377A |
| FEATURES | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor, light sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass | |
| Security Devices | Face recognition, fingerprint reader (side) | Fingerprint reader | |
| Additional Phone Features | Multitasking, MU-MIMO technology, Fast Charging, Samsung KNOX, High AOP Mic, Smart View, Samsung DeX support, Bixby Vision, Secure Folder function, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, dual battery, Flex mode, Multi Active Window, Bluetooth Scalable Codec, Hinge CAM technology, App Pair, Split Screen Capture | - |
| OTHERS | Samsung Galaxy Z Fold2 5G | Vivo X51 5G |
|---|
| Included Accessories | Power adapter, SIM card removal tool, USB-C cable, protective case, Samsung Galaxy Buds Live | Headset, USB cable, power adapter, SIM card removal tool, USB-C to 3.5 jack adapter, protective case, protective film | |
|---|---|---|---|
| Compliant Standards | VDE, SGS Eye Care Display Certification | IP53 |
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