Phone Comparison - LG Optimus Black P970 vs ZTE Nubia Z9 mini vs Xiaomi Redmi 2A
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| Manufacturer | LG | ZTE | Xiaomi |
| Announced | January 2011 | March 2015 | March 2015 |
| Status | Available - May 2011 | Available - April 2015 | Available - March 2015 |
| Price | - | Rs. 16,999 ($249.99) [Similarly Priced] | Rs. 5,999 ($88.22) [Similarly Priced] |
| Colors | Black, Pink, Silver, White, Brown | Black, White | Black, White, Yellow, Pink, Green |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
122 x 64 x 9.2 mm
(4.8 x 2.52 x 0.36 in ) |
141.3 x 69.8 x 8.2 mm (5.56 x 2.75 x 0.32 in) |
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| Weight | 109 g (3.84 oz) | 147 g (5.19 oz) | - |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 TD-SCDMA 1900 / 2000 |
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 900 / 1700 / 2100 HSDPA 900 / 1900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 1900 / 2100 TD-SCDMA 1900 / 2100 |
| 4G Network | - | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) | LTE 1800 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v2.2 (Froyo), upgradable to v2.3 | Nubia UI 2.8, Android OS, v5.0.2 (Lollipop) | Android OS, v4.4 (KitKat) |
| Processor | 1 GHz Cortex-A8, TI OMAP 3630 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Quad-core 1.5 GHz, LCI L1860C |
| GPU | PowerVR SGX530 | Adreno 405 | Mali-T628 MP4 |
| RAM | 512 MB | 2 GB | 1 GB |
| Internal Memory | 2 GB storage (1 GB user-available) | 16 GB | 8 GB |
| External Memory | microSD, up to 32GB | microSD, up to 128 GB | microSD, up to 32 GB |
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| Type | IPS LCD capacitive touchscreen | Capacitive touchscreen | IPS LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.0 inches | 5.0 inches | 4.7 inches |
| Resolution | 480 x 800 pixels (233 ppi) | 1080 x 1920 pixels (441 ppi) | 720 x 1280 pixels (312 ppi) |
| Screen-to-Body Ratio | 58.44% | 69.75% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | FM radio | FM Radio |
| Games | Yes + downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592 x 1944 pixels | 16 MP, 5312 x 2988 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Face And Smile Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Auto focus, f/2.2 Aperture, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama, BSI Sensor, Omnivision sensor |
| Video | Yes, 720p@30fps | 1080p@30fps | Yes, 1080p |
| Front Camera | Yes, 2 MP [Similar] | 8 MP, 1080p [Similar] | 2 MP, 720p [Similar] |
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| GPRS | Up to 48 kbps | Yes | Yes |
| Edge | Up to 237 kbps | Yes | Yes |
| 3G | HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps | HSPA, LTE Cat4 150/50 Mbps | HSPA, LTE Cat4 150/50 Mbps |
| Bluetooth | Yes, v2.1 with A2DP, EDR | v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot | Wi-Fi 802.11 b/g/n, hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0, USB Host | microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, Beidou |
| Browser | HTML, Adobe flash | HTML5 | HTML5 |
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| Internal | 2 GB storage (1 GB user-available), 512 MB RAM | 16 GB, 2 GB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32GB | microSD, up to 128 GB | microSD, up to 32 GB |
| USB OTG | - | 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 | Standard battery, Li-Ion | Non-removable Li-Ion Battery | Li-Po Battery |
| Capacity | 1500 mAh | 2900 mAh | 2200 mAh |
| Stand by | Up to 375 h | Up to 750 h (3G) | - |
| Talk Time | Up to 6 h | Up to 43 h (3G) | - |
