Phone Comparison - Sony Xperia U vs Xiaomi Redmi Note 4G vs Xiaomi Redmi 3 Pro
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| Manufacturer | Sony | Xiaomi | Xiaomi |
| Announced | February 2012 | August 2014 | March 2016 |
| Status | Available - May 2012 | Available - November 2014 | Available - April 2016 |
| Colors | Black, White/ exchangeable bottom caps in white, black, pink, ye | Black/White | Dark Gray, Silver, Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
112 x 54 x 12 mm (4.41 x 2.13 x 0.47 in) |
154 x 78.7 x 9.5 mm (6.06 x 3.1 x 0.37 in) |
139.3 x 69.6 x 8.5 mm (5.48 x 2.74 x 0.33 in) |
| Weight | 110 g (3.88 oz) | 199 g (7.02 oz) | 144 g (5.08 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 / 1900 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO |
| 3G Network | HSDPA 900 / 2100 - ST25iHSDPA 850 / 1900 / 2100 - ST25a | TD-SCDMA 1900 / 2000 | HSDPA 850 / 1900 / 2100 |
| 4G Network | - | TD-LTE 1900 / 2300 / 2600 | 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, EMail, IM |
| Build Features | - | - | - Fingerprint Sensor |
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| OS | Android OS, v2.3 (Gingerbread), upgradable to v4.0 | Android OS, v4.2 (Jelly Bean) | Android OS, v5.1 (Lollipop) |
| Processor | Dual-core 1 GHz Cortex-A9, STE U8500 | Quad-core 1.6 GHz Cortex-A7, Qualcomm MSM8928 Snapdragon 400 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8939v2 Snapdragon 616 |
| GPU | Mali-400MP | Adreno 305 | Adreno 405 |
| RAM | 512 MB | 2 GB | 3 GB |
| Internal Memory | 8 GB (4 GB user-accessible) | 8 GB | 32 GB |
| External Memory | No | microSD, up to 64 GB | microSD, up to 128 GB (uses SIM 2 slot) |
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| Type | LED-backlit LCD, capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.5 inches | 5.5 inches | 5.0 inches |
| Resolution | 480 x 854 pixels (280 ppi) | 720 x 1280 pixels (267 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 55.77% | 68.82% | 70.95% |
| 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 | 13 MP, 4128 x 3096 pixels | 13 MP, 4160 x 3120 pixels |
| Flash | LED flash | LED flash | LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, 3D Sweep Panorama, Image Stabilization | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, HDR | Phase Detection Autofocus, f/2.0, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama |
| Video | Yes, 720p@30fps, video light | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, VGA [Similar] | 5 MP [Similar] | 5 MP, f/2.2, 1080p@30fps [Similar] |
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| GPRS | Up to 107 kbps | Yes | Yes |
| Edge | Up to 296 kbps | Yes | Yes |
| 3G | HSDPA 14.4 Mbps, HSUPA 5.76 Mbps | TD-SCDMA; LTE | HSPA, LTE, EV-DO Rev.A 3.1 Mbps |
| Bluetooth | Yes, v2.1 with A2DP, EDR | v4.0, A2DP, LE | v4.1, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot, DLNA | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | Yes, microUSB v2.0, USB On-the-go support | microUSB v2.0, USB On-the-go | microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML5, Adobe Flash | HTML5 | HTML5 |
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| Internal | 8 GB (4 GB user-accessible), 512 MB RAM | 8 GB, 2 GB RAM | 32 GB, 3 GB RAM |
| Expandable Storage | No | microSD, up to 64 GB | microSD, up to 128 GB (uses SIM 2 slot) |
| 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 | Standard battery, Li-Ion | Li-Po Battery | Non-removable Li-Ion Battery |
| Capacity | 1320 mAh | 3200 mAh | 4100 mAh |
| Stand by | Up to 260 h (2G) Up to 472 h (3G) |
Up to 775 h (3G) | - |
| Talk Time | Up to 6 h 36 min (2G) Up to 5 h 36 min (3G) |
Up to 38 h (2G) Up to 14 h (3G) |
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