vivo Y28 |
vivo Y91 |
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Hardware and OS | vivo Y28 | vivo Y91 |
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Operating system | Android 4.2.2 (Jelly Bean) | Android 8.1 (Oreo); Funtouch 4.5 |
Processor | Quad-core 1.3 GHz Cortex-A7 | Octa-core (2x1.95 GHz Cortex-A53 & 6x1.45 GHz Cortex A53) |
Chipset | Mediatek MT6582 (28 nm) | Qualcomm SDM439 Snapdragon 439 (12 nm) |
GPU | Mali-400MP2 | Adreno 505 |
Internal memory | 8 GB, 1 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 Y28 | vivo Y91 |
Type | IPS LCD | IPS LCD |
Size | 4.7" inc | 6.22" inc |
Resolution | 540 x 960 px | 720 x 1520 px |
Touchscreen | capacitive touchscreen | capacitive touchscreen |
Screen-to-Body Ratio | 68.1% | 82.9% |
Display area | 64.2 cm2 | 96.6 cm2 |
Display aspect ratio | 16:10 (height:width) | 19:9 (height:width) |
Pixel Density | 216 PPI | 270 PPI |
Colors | 16M | 16M |
Connectivity | vivo Y28 | vivo Y91 |
2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
3G Network | HSDPA 850 / 900 / 2100 | |
4G Network | 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 | GSM / HSPA / LTE |
SIM card | Micro-SIM | Dual SIM (Nano-SIM, dual stand-by) |
Bluetooth | 4.0, A2DP, EDR | 4.2, A2DP, LE |
Edge | Yes | Yes |
GPRS | Yes | Yes |
GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS, BDS |
Speed | HSPA 21.1/5.76 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 Y28 | vivo Y91 |
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 | LED flash, panorama |
Video | 1080p@30fps | 1080p@30fps |
Selfie camera | 5 MP, Single | 8 MP, Single |
Multimedia | vivo Y28 | vivo Y91 |
3.5 mm Jack | Yes | Yes |
Radio | FM radio | FM radio |
Design | vivo Y28 | vivo Y91 |
Colors | White | Starry Black, Ocean Blue, Red (Y91i only) |
Dimensions | 137.4 x 68.6 x 9.8 mm | 155.1 x 75.1 x 8.3 mm |
Weight | 156 g | 163.5 g |
Battery | vivo Y28 | vivo Y91 |
Battery life | Stand by time- Up to 430 h (2G) / Up to 430 h (3G) Talking time- Up to 14 h (2G) / Up to 13 h (3G) Music play - Up to 32 h | |
Battery capacity | 2100 mAh, Removable Li-Po | 4030 mAh, Non-removable Li-Po |
Other | vivo Y28 | vivo Y91 |
Release date | 2014, December | 2018, November |
Sensors | Accelerometer, proximity, compass , Infrared port | Fingerprint (rear-mounted), accelerometer, proximity, compass |