Phone Comparison - ZTE Grand S II S291 vs Xiaomi Mi 4 vs ZTE Nubia Z9 mini
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| Manufacturer | ZTE | Xiaomi | ZTE |
| Announced | January 2014 | July 2014 | March 2015 |
| Status | Available - March 2014 | Available - Q3 2014 | Available - April 2015 |
| Price | - | - | Rs. 16,999 ($249.99) [Similarly Priced] |
| Colors | Silver | Black, White | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
157 x 77 x 9.1 mm (6.18 x 3.03 x 0.36 in) |
139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in) |
141.3 x 69.8 x 8.2 mm (5.56 x 2.75 x 0.32 in) |
| Weight | 150 g (5.29 oz) | 149 g (5.26 oz) | 147 g (5.19 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 TD-SCDMA 1900 / 2000 |
| 3G Network | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE 1800 / 2100 / 2600 (Bands 1, 3, 7) | LTE | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.3 (Jelly Bean) | Android OS, v4.4.3 (KitKat) | Nubia UI 2.8, Android OS, v5.0.2 (Lollipop) |
| Processor | Quad-core 2.3 GHz Krait 400, Qualcomm Snapdragon 800 | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | Adreno 330 | Adreno 330 | Adreno 405 |
| RAM | 2 GB | 3 GB | 2 GB |
| Internal Memory | 16 GB storage | 16/64 GB | 16 GB |
| External Memory | microSD, up to 32 GB | No | microSD, up to 128 GB |
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| Type | Capacitive touchscreen | IPS LCD capacitive touchscreen | Capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.5 inches | 5.0 inches | 5.0 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 68.82% | 72.14% | 69.75% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | - | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels | 16 MP, 5312 x 2988 pixels |
| Flash | LED flash | Dual-LED Flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection | Auto focus, 1/3' Sensor Size, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR |
| Video | Yes, 1080p@30fps | 2160p, 1080p@30fps, HDR | 1080p@30fps |
| Front Camera | Yes, 2 MP, 1080p@30fps [Similar] | 8 MP, 1080p@30fps [Similar] | 8 MP, 1080p [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA+, LTE | DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE | HSPA, LTE Cat4 150/50 Mbps |
| Bluetooth | Yes, v4.0 with A2DP | v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0 (MHL), USB On-the-go | microUSB v2.0, USB Host |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB storage, 2 GB RAM | 16/64 GB, 3 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32 GB | No | microSD, up to 128 GB |
| USB OTG | - | Supported | Supported |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| NFC | |
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| Type | Non-removable Li-Ion Battery | Non-removable Li-Ion Battery | Non-removable Li-Ion Battery |
| Capacity | 3000 mAh | 3080 mAh | 2900 mAh |
| Stand by | - | - | Up to 750 h (3G) |
| Talk Time | - | - | Up to 43 h (3G) |
