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Brief information about compared phones: vivo X21 , ZTE nubia Xvivo X21 2018 year of release, cpu Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260), screen 6.28", with resolution 1080x2280. Smartphone has 12 megapixel front camera and 12 megapixel main camera. ZTE nubia X 2018 year of release, cpu Octa-core (4x2.65 GHz Kryo 385 Gold & 4x1.8 GHz Kryo 385 Silver), screen 6.26", with resolution 1080x2280. Smartphone has 16 megapixel front camera and 16 megapixel main camera. |
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| Display | Technology | Super AMOLED | LTPS IPS LCD | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | 16M | ||
| Screen size | 6.28" inch | 6.26" inch | ||
| Screen area | 98.4 cm2 | 97.8 cm2 | ||
| Screen format | 19:9 (height:width) | 19:9 (height:width) | ||
| Screen to body ratio | 85.2% | 86.6% | ||
| Screen resolution | 1080 x 2280 px | 1080 x 2280 px | ||
| PPI /points per inch/ | 402 PPI | 403 PPI | ||
| Screen protection | Corning Gorilla Glass 3 | |||
| Camera and Video | Rear camera, main | 12 MP, Dual | 16 MP, Dual | |
| Camera specs | 12 MP, f/1.8, 1/2.55'', 1.4µm, dual pixel PDAF -5 MP, f/2.4, depth sensor | 16 MP, f/1.8, PDAF -24 MP, f/1.7, PDAF | ||
| Functions | LED flash, HDR, panorama | Dual-LED dual-tone flash, HDR, panorama | ||
| Video | 1080p@30fps | 2160p@30fps, 1080p@30fps | ||
| Front camera, selfie | 12 MP, Single | 16 MP, Dual | ||
| Specifications | 12 MP, f/2.0 | Uses main cameras | ||
| Performance | Operating system OS | Android 8.1 (Oreo); Funtouch 4 | Android 8.1 (Oreo); Nubia UI 6 | |
| Chipset | Qualcomm SDM660 Snapdragon 660 (14 nm) | Qualcomm SDM845 Snapdragon 845 (10 nm) | ||
| Processor CPU | Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260) | Octa-core (4x2.65 GHz Kryo 385 Gold & 4x1.8 GHz Kryo 385 Silver) | ||
| Graphics processor GPU | Adreno 512 | Adreno 630 | ||
| External memory | microSD, up to 256 GB (uses SIM 2 slot) | No | ||
| Internal memory | 64/128 GB, 6 GB RAM | 128/256/512 GB, 8 GB RAM 64 GB, 6 GB RAM | ||
| Antutu 7 score | 143728 | |||
| GeekBench 4 Single Core | 1806 | |||
| GeekBench 4 Multi-Core | 4240 | |||
| General specs | Release date | 2018, March | 2018, October | |
| Dimensions (HxWxD) | 154.5 Х 74.8 Х 7.4 mm | 154.1 Х 73.3 Х 8.4 mm | ||
| Weight | 156.2 g | 181 g | ||
| Colors | Black, Aurora White, Ruby Red | Blue Gold, Sea Blue, Black Gold, Deep Gray, Starry Night (512 GB only) | ||
| Battery | 3200 mAh, Non-removable Li-Ion | 3800 mAh, Non-removable Li-Po | ||
| Approximate price | 450 EUR | 450 EUR | ||
| Body build | Front glass, aluminum body | |||
| Communication and Connectivity | SIM card | Hybrid Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) | |
| Network | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100), 2(1900), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO -4G - LTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | ||
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (6CA) Cat18 1200/150 Mbps | ||
| GPRS | Yes | Yes | ||
| Edge | Yes | Yes | ||
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | Wi-Fi 802.11 b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot | ||
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, BDS | ||
| NFC | ||||
| USB | microUSB 2.0, USB On-The-Go | Type-C 1.0 reversible connector, USB On-The-Go | ||
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE | ||
| Music and Audio | Radio | FM radio | No | |
| Headphone jack | Yes | No | ||
| Others | 32-bit/192kHz audio -Active noise cancellation with dedicated mic | Secondary display (on the back): OLED, 5.1 inches, 720 x 1520 pixels, Corning Gorilla Glass 3 | ||
| Other features | Dop | Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass - Fast battery charging | Sensors Dual fingerprint (side-mounted), accelerometer, gyro, proximity, compass - Fast battery charging 9V/2A 18W (Quick Charge 4.0) | |
