vivo Y51a vs vivo X Fold3 Pro

General Info

Manufacturer
vivo	vivo
Announced
January 2021	March 2024
Status
Coming Soon - January 2021	Coming Soon - April 2024
Colors
Titanium Sapphire, Crystal Symphony	Black, White
Form Factor
Candybar	Candybar
Dimension
163.9 x 75.3 x 8.4 mm (6.45 x 2.96 x 0.33 in)	Unfolded: 160 x 142.4 x 5.2 mm Folded: 160 x 72.6 x 11.2 mm (Unfolded: 6.3 x 5.61 x 0.2 in Folded: 6.3 x 2.86 x 0.44 in)
Weight
188 g (6.63 oz)	236 g (8.32 oz)
SIM Type
Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)
2G Network
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 / 1900
3G Network
HSDPA 850 / 900 / 2100	HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1x
4G Network
1, 3, 5, 8, 40	1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 42, 66
5G Network
-	1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 77, 78 SA/NSA
Messaging

Build Features
- Fingerprint Sensor (side-mounted)	- Dual screen fingerprint (under display, ultrasonic) IPX8 water resistant

OS
Android 11	Android 14
User Interface
Funtouch 11	OriginOS 4
Processor
Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver), Qualcomm SM6115 Snapdragon 662 (11 nm) [Similar]	Octa-core (1x3.3 GHz Cortex-X4 & 3x3.2 GHz Cortex-A720 & 2x3.0 GHz Cortex-A720 & 2x2.3 GHz Cortex-A520), Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm) [Similar]
GPU
Adreno 610 [Similar]	Adreno 750 [Similar]
RAM
8 GB [Browse Similar]	16 GB [Browse Similar]
Internal Memory
128 GB	1 TB
External Memory
microSDXC (dedicated slot)	No

Type
IPS LCD Screen	QHD+ Foldable LTPO AMOLED Screen 120Hz Refresh Rate HDR10+, Dolby Vision, 4500 Nits (peak)
Colors
16M Colour	1B colors
Size
6.58 inches [Similar]	8.03 inches [Similar]
Resolution
1080 x 2408 pixels (401 ppi)	2200 x 2480 pixels (413 ppi)
Screen-to-Body Ratio
84.54%	90.58%
Multi-Touch

Secondary Display
-	6.53 inches AMOLED Screen, 1172 x 2748 pixels, 21:9 ratio 120Hz Refresh Rate, HDR10+, Dolby Vision, 4500 nits (peak)

Rear Camera
48 MP + 8 MP + 2 MP [Similar]	50 MP + 64 MP + 50 MP [Similar]
Flash
LED Flash	Dual-LED Flash
Features
48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 120˚, (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) HDR, Panorama	50 MP, f/1.7, 23mm (wide), 1/1.3", PDAF, Laser AF, OIS 64 MP, f/2.6, 70mm (periscope telephoto), 1/2.0", PDAF, OIS, 3x optical zoom 50 MP, f/2.0, 119˚ (ultrawide), 1/2.76", PDAF Zeiss Optics, Zeiss T* Lens Coating, Panorama
Video
4K@30fps, 1080p@30fps, gyro-EIS	8K@30fps, 4K@30/60fps, 1080p@30/60fps, gyro-EIS
Front Camera
16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm HDR 1080p@30fps [Similar]	32 MP, f/2.4, (wide) Cover camera: 32 MP, f/2.4, (wide) HDR 1080p@30fps [Similar]

GPRS
Yes	Yes
Edge
Yes	Yes
3G
HSPA 42.2/5.76 Mbps, LTE-A	HSPA, LTE, 5G
Bluetooth
5.0, A2DP, LE	5.4, A2DP, LE, aptX HD, aptX Adaptive, aptX Lossless, LHDC
Wi-Fi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
USB
USB Type-C 2.0, USB On-The-Go	USB Type-C 3.2 Gen 2, OTG
GPS
Yes, with A-GPS, GLONASS, GALILEO, BDS	GPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5)
Browser
Yes	Yes

Fingerprint

Proximity Sensor

Accelerometer Sensor

Magnetic-field Sensor (Compass)

Gyroscope Sensor

Barometer Sensor

NFC

Type
Non-removable Li-Po Battery Fast battery charging 18W	Non-removable Si-Ca Battery Fast battery Charging 100W wired, 1-100% in 31 min (advertised) 50W wireless Reverse wireless
Capacity
5000 mAh	5700 mAh
Stand by
-	-
Talk Time
-	-