vivo Y51s vs vivo Y51a: A Detailed Comparison

The vivo Y series consistently delivers affordable smartphones packed with features. Two popular contenders are the vivo Y51s and the vivo Y51a. But which one offers the best value? This comprehensive comparison will delve into their specs, performance, and more to help you decide.
Phones Images

🏆 Quick Verdict

The vivo Y51a edges out the Y51s thanks to its more efficient Snapdragon 662 chipset, resulting in smoother performance and slightly better battery life. While both offer decent cameras and displays, the Y51a's overall package makes it the more compelling choice for most users.

PHONES
Phone Names vivo Y51s vivo Y51a
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 2100HSDPA 850 / 900 / 2100
4G bands1, 3, 4, 5, 8, 34, 38, 39, 40, 411, 3, 5, 8, 40
5G bands1, 41, 78 SA/NSA-
SpeedHSPA, LTE, 5G (3.6+ Gbps DL)HSPA, LTE
TechnologyGSM / CDMA / HSPA / LTE / 5GGSM / HSPA / LTE
 CDMA 800 / 1900 & TD-SCDMA-
Launch
Announced2020, July 24. Released 2020, July 292021, January 08
StatusDiscontinuedAvailable. Released 2021, January 23
Body
Dimensions162 x 76.6 x 8.5 mm (6.38 x 3.02 x 0.33 in)163.9 x 75.3 x 8.4 mm (6.45 x 2.96 x 0.33 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight190 g (6.70 oz)188 g (6.63 oz)
Display
Resolution1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)1080 x 2408 pixels, 20:9 ratio (~401 ppi density)
Size6.53 inches, 104.7 cm2 (~84.4% screen-to-body ratio)6.58 inches, 104.3 cm2 (~84.5% screen-to-body ratio)
TypeIPS LCDIPS LCD
Platform
CPUOcta-core (2x2.0 GHz Cortex-A77 & 6x1.8 GHz Cortex-A55)Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
ChipsetExynos 880 (8 nm)Qualcomm SM6115 Snapdragon 662 (11 nm)
GPUMali-G76 MP5Adreno 610
OSAndroid 10, Funtouch 10.5Android 11, upgradable to Android 12, Funtouch 12
Memory
Card slotNomicroSDXC (dedicated slot)
Internal128GB 6GB RAM, 128GB 8GB RAM128GB 6GB RAM, 128GB 8GB RAM
 UFS 2.1-
Main Camera
FeaturesLED flash, HDR, panoramaLED flash, HDR, panorama
Triple48 MP, f/1.8, 25mm (wide), 1/2.0", 0.8µm, PDAF 2 MP (macro) Auxiliary lens48 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 (macro)
Video4K@30fps, 1080p@30fps; gyro-EIS4K@30fps, 1080p@30fps, gyro-EIS
Selfie camera
FeaturesHDRHDR
Single8 MP, f/2.0, (wide)16 MP, f/2.0, (wide), 1/3.06" 1.0µm
Video1080p@30fps1080p@30fps
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE, aptX HD5.0, A2DP, LE
NFCNoNo
PositioningGPS, GLONASS, BDS, GALILEOGPS, GLONASS, GALILEO, BDS
RadioNoFM radio
USBmicroUSB 2.0, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (side-mounted), accelerometer, proximity, compassFingerprint (side-mounted), accelerometer, gyro, proximity, compass
Battery
Charging18W wired18W wired, 70% in 67 min
Type4500 mAh5000 mAh
Misc
ColorsBlack, Blue, WhiteTitanium Sapphire, Crystal Symphony
ModelsV2002AV2031
PriceAbout 250 EURAbout 200 EUR
SAR-0.87 W/kg (head)     0.39 W/kg (body)

vivo Y51s

  • Slightly more powerful CPU core (Cortex-A77)
  • Decent camera system
  • Good value for the price

  • Less efficient chipset
  • Shorter battery life
  • HD+ resolution may appear less sharp on a larger screen

vivo Y51a

  • More efficient Snapdragon 662 chipset
  • Better overall performance
  • Longer battery life
  • Faster charging (indicated by 70% in 67 min)

  • Slightly less powerful CPU core than Y51s
  • Camera performance may be marginally behind in certain conditions

Display Comparison

Both phones feature a 6.51-inch IPS LCD display with a 720 x 1600 resolution (HD+). While the panels are similar in size and resolution, color accuracy and brightness might vary slightly. Expect decent viewing angles and adequate brightness for indoor use, but outdoor visibility could be challenging under direct sunlight. Neither phone boasts a high refresh rate.

Camera Comparison

Both phones typically feature a 48MP main camera, an 8MP ultrawide lens, and a 2MP macro lens. The Y51a often exhibits slightly better image processing and low-light performance due to the Snapdragon 662's image signal processor (ISP). Selfie cameras are usually 16MP on both devices.

Performance

The vivo Y51a's Snapdragon 662 chipset generally outperforms the Exynos 880. The Snapdragon 662's efficiency and optimized architecture provide smoother multitasking and app loading times. While the Y51s has a slightly higher clocked core (Cortex-A77), the overall performance of the Y51a is more consistent.

Battery Life

The vivo Y51a has a noticeable advantage in battery life. While both have a 5000mAh battery, the Snapdragon 662's efficiency allows it to last longer on a single charge. The Y51a also supports 18W fast charging and boasts a 70% charge in 67 minutes, a useful indicator of charging speed.

Buying Guide

The vivo Y51s is a good option for users prioritizing a slightly more powerful CPU core (Cortex-A77) for specific tasks, but who aren't overly concerned with battery life. The vivo Y51a is ideal for those seeking a well-rounded budget phone with reliable performance, good battery life, and a smooth user experience for everyday tasks.

Frequently Asked Questions

❓ Is the vivo Y51s still worth buying?
The vivo Y51s can still be a decent option if you find it at a significantly lower price than the Y51a. However, the Y51a generally offers a better overall experience.
❓ Which chipset is better, Exynos 880 or Snapdragon 662?
The Snapdragon 662 is generally considered better due to its improved efficiency and performance optimization, especially for everyday tasks and gaming.