On this page we compare specs vivo X6S Octa-core (4x1.8 GHz Cortex-A72 & 4x1.4 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 X6S | vivo Y91 |
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Operating system | Android 5.1 (Lollipop); Funtouch 2.5 | Android 8.1 (Oreo); Funtouch 4.5 |
Processor | Octa-core (4x1.8 GHz Cortex-A72 & 4x1.4 GHz Cortex-A53) | Octa-core (2x1.95 GHz Cortex-A53 & 6x1.45 GHz Cortex A53) |
Chipset | Qualcomm MSM8976 Snapdragon 652 (28 nm) | Qualcomm SDM439 Snapdragon 439 (12 nm) |
GPU | Adreno 510 | Adreno 505 |
Internal memory | 64 GB, 4 GB RAM | 32 GB, 3 GB RAM16 GB, 2 GB RAM |
External memory | microSD, up to 256 GB (uses SIM 2 slot) | microSD, up to 256 GB |
Display | vivo X6S | vivo Y91 |
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Type | Super AMOLED | IPS LCD |
Size | 5.2" inc | 6.22" inc |
Resolution | 1080 x 1920 px | 720 x 1520 px |
Touchscreen | capacitive touchscreen | capacitive touchscreen |
Screen-to-Body Ratio | 68.3% | 82.9% |
Display area | 74.5 cm2 | 96.6 cm2 |
Display aspect ratio | 16:9 (height:width) | 19:9 (height:width) |
Pixel Density | 424 PPI | 270 PPI |
Colors | 16M | 16M |
Connectivity | vivo X6S | vivo Y91 |
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2G Network | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
4G Network | LTE band 1(2100), 3(1800), 4(1700/2100), 38(2600), 39(1900), 40(2300), 41(2500) | 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 | Hybrid Dual SIM (Nano-SIM/ Micro-SIM, dual stand-by) | 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 | Yes, with A-GPS, GLONASS, BDS |
Speed | HSPA, LTE | HSPA 42.2/5.76 Mbps, LTE Cat5 150/75 Mbps |
USB | microUSB 2.0, USB Host | microUSB 2.0, USB On-The-Go |
Camera | vivo X6S | vivo Y91 |
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Main camera | 13 MP, Single | 13 MP, Dual |
Specs | 13 MP, PDAF, f/2.2 | 13 MP, f/2.2, PDAF -2 MP, f/2.4, depth sensor |
Features | LED flash, panorama, HDR | LED flash, panorama |
Video | 1080p@30fps | 1080p@30fps |
Selfie camera | 8 MP, Single | 8 MP, Single |
Multimedia | vivo X6S | vivo Y91 |
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3.5 mm Jack | Yes | Yes |
Radio | FM radio | FM radio |
Design | vivo X6S | vivo Y91 |
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Colors | Silver, Gold, Rose Gold | Starry Black, Ocean Blue, Red (Y91i only) |
Dimensions | 147.9 x 73.8 x 6.7 mm | 155.1 x 75.1 x 8.3 mm |
Weight | 140.5 g | 163.5 g |
Battery | vivo X6S | vivo Y91 |
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Battery capacity | 2400 mAh, Non-removable Li-Ion | 4030 mAh, Non-removable Li-Po |
Other | vivo X6S | vivo Y91 |
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Release date | 2016, March | 2018, November |
Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | Fingerprint (rear-mounted), accelerometer, proximity, compass |