On this page we compare specs vivo Y51 Quad-core 1.2 GHz Cortex-A53 with vivo Y91 Octa-core (2x1.95 GHz Cortex-A53 & 6x1.45 GHz Cortex A53), we compare external dimensions, compare screens and performance, the amount of RAM and memory for storing media data, battery capacity and characteristics of photo cameras, compare the presence of various sensors and functions.
Hardware and OS | vivo Y51 | vivo Y91 |
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Operating system | Android 5.0.2 (Lollipop); Funtouch 2.5 | Android 8.1 (Oreo); Funtouch 4.5 |
Processor | Quad-core 1.2 GHz Cortex-A53 | Octa-core (2x1.95 GHz Cortex-A53 & 6x1.45 GHz Cortex A53) |
Chipset | Qualcomm MSM8916 Snapdragon 410 (28 nm) | Qualcomm SDM439 Snapdragon 439 (12 nm) |
GPU | Adreno 306 | Adreno 505 |
Internal memory | 16 GB, 2 GB RAM | 32 GB, 3 GB RAM16 GB, 2 GB RAM |
External memory | microSD, up to 256 GB (dedicated slot) | microSD, up to 256 GB |
Display | vivo Y51 | vivo Y91 |
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Type | IPS LCD | IPS LCD |
Size | 5" inc | 6.22" inc |
Resolution | 540 x 960 px | 720 x 1520 px |
Touchscreen | capacitive touchscreen | capacitive touchscreen |
Screen-to-Body Ratio | 66.8% | 82.9% |
Display area | 68.9 cm2 | 96.6 cm2 |
Display aspect ratio | 16:9 (height:width) | 19:9 (height:width) |
Pixel Density | 220 PPI | 270 PPI |
Colors | 16M | 16M |
Connectivity | vivo Y51 | vivo Y91 |
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2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
3G Network | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 |
4G Network | LTE 850 / 900 / 1800 / 2100 / 2600 - Malaysia | LTE band 1(2100), 3(1800), 5(850), 40(2300), 41(2500) |
Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
Network | GSM / HSPA / LTE | GSM / HSPA / LTE |
SIM card | Dual SIM | Dual SIM (Nano-SIM, dual stand-by) |
Bluetooth | 4.0, A2DP | 4.2, A2DP, LE |
Edge | Yes | Yes |
GPRS | Yes | Yes |
GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, BDS |
Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat5 150/75 Mbps |
USB | microUSB 2.0 | microUSB 2.0, USB On-The-Go |
Camera | vivo Y51 | vivo Y91 |
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Main camera | 8 MP, Single | 13 MP, Dual |
Specs | 8 MP, AF | 13 MP, f/2.2, PDAF -2 MP, f/2.4, depth sensor |
Features | LED flash, HDR, panorama | LED flash, panorama |
Video | 1080p@30fps | 1080p@30fps |
Selfie camera | 5 MP, Single | 8 MP, Single |
Multimedia | vivo Y51 | vivo Y91 |
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3.5 mm Jack | Yes | Yes |
Radio | FM radio | FM radio |
Design | vivo Y51 | vivo Y91 |
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Colors | White | Starry Black, Ocean Blue, Red (Y91i only) |
Dimensions | 143.8 x 71.7 x 7.5 mm | 155.1 x 75.1 x 8.3 mm |
Weight | 157 g | 163.5 g |
Battery | vivo Y51 | vivo Y91 |
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Battery capacity | 2350 mAh, Non-removable Li-Ion | 4030 mAh, Non-removable Li-Po |
Other | vivo Y51 | vivo Y91 |
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Release date | 2015, December | 2018, November |
Sensors | Accelerometer, proximity, compass | Fingerprint (rear-mounted), accelerometer, proximity, compass |