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| Manufacturer | Xiaomi Inc. |
|---|---|
| Type | Smartphone |
| Slogan | "Crafted to perfection" Since July 2014: "The Fastest & Most Gorgeous Mi Phone Ever." |
| Series | Mi |
| First released | August 2014; 10 years ago (2014-08) |
| Availability by region | August 2014, January 2015 (India) |
| Predecessor | Xiaomi Mi 3 |
| Successor | Xiaomi Mi 4S Xiaomi Mi 5 |
| Related | Xiaomi Mi 4i Xiaomi Mi 4c |
| Compatible networks | GSM,CDMA,WCDMA,3G,EVDO,HSDPA and optionallyLTE |
| Form factor | Slate |
| Dimensions | 139.2 mm (5.48 in) H 68.5 mm (2.70 in) W 8.9 mm (0.35 in) D |
| Weight | 149 g (5.26 oz) |
| Operating system | Original:MIUI v5 (Android 4.4 Kitkat) Current:MIUI 9 (Android 6.0 Marshmallow) Windows 10 Mobile (up to version 1607) released December 3, 2015 (2015-12-3) |
| CPU | 2.5 GHzQualcomm Snapdragon 801 MSM8974AC Quad-CoreKrait 400 |
| GPU | Adreno 330 578MHz |
| Memory | 2 or 3 GBLPDDR3RAM |
| Storage | 16 or 64 GB eMMC 5.0 |
| Battery | 3080 mAh |
| Rear camera | 13 MPback-side illuminated sensor, HD video (2160p) at 30 frame/s, IR filter, dual warm/coolLED flashes, aperture f/1.8, facial recognition, image stabilization burst mode |
| Front camera | 8 MP, HD video (1080p) |
| Display | 5 in (130 mm) diagonal (16:9 aspect ratio), multi-touch display, LED backlit IPS TFT LCD, 1080x1920 pixels at 441 ppi |
| Data inputs | Multi-touchtouchscreen display, microphone, gyroscope, accelerometer, digitalcompass, proximity sensor, ambient light sensor |
| SAR | 1.36 W/kg (head)[1] |
| Website | www |
TheXiaomi Mi 4 (Chinese:小米手机4) is asmartphone developed by the Chinese electronics manufacturerXiaomi for itshigh-endsmartphone line, and was released in August 2014.Xiaomi held an event to formally introduce thehigh-endphone, and its complementary smart-accessory, theXiaomiMiBand, during the Xiaomi New Product Launch Event 2014 on 22 July 2014.
Similar to the principle of theXiaomi Mi2, the Mi 4 is a highly revamped version of its predecessor, theXiaomi Mi3. Thephone is of a different design to its predecessor. It was also released slightly before the newMIUI 6, which was introduced in August 2014.
Reception towards thedevice was generally positive, though there were still a high amount of negative feedback from users ofApple'siPhone due to its similar design and quality. Some media companies hailed it to be one of the bestsmartphones available in the market due to its high-end hardware which is sold at a lower price compared to competitorsmartphones. However, others criticized it for being too similar toApple'siPhone 5S.[2]
Before its official unveiling, media speculation primarily focused on leaks; including photos of the early prototypes of the device and screenshots ofMIUI 6, these leaks were later proven to be fake.
Xiaomi announced the Mi 4 andMiBand during a media event at theCNCC on 22 July 2014. While the device was announced in July 2014, it didn't become available until August 2014, shortly before unveilingMIUI 6.
In August 2014, the Mi 4 was released inChina and then to other countries.Xiaomi operated in a limited, however expanding, list of countries and consumers outside of the countries it operates in have to buy it online.
The Xiaomi Mi 4 ships withMIUI V5 (upgradable to MIUI V10),Xiaomi's variant of theAndroidoperating system. Theuser interface of MIUI is based on the concept ofdirect manipulation, usingmulti-touchgestures.Interface control elements consist of sliders, switches, and buttons. Interaction with theOS includes gestures such as swipe, tap, pinch and reverse pinch, all of which have specific definitions within the context of theAndroidoperating system and its multi-touch interface. Internalaccelerometers are used by some applications to respond to the movement of the device such as rotating it vertically (one common result is switching from portrait to landscape mode). The device includes an updater application that allows it to update its OS to the latest version of MIUI available to it.
In March 2015, it was announced that selectedregistered users of Mi 4 devices in China would receive a ROM port of theWindows 10 Mobile operating system as a trial partnership between Xiaomi andMicrosoft.[3] The ROM flash download was released for these users in June 2015, who could then test the software on their devices and provide feedback to both Microsoft and Xiaomi.[4]
The device has a 5-inch (12.7 cm) Sharp/JDI OGS fully laminated touchscreen, with a screen resolution of 1080x1920 at a pixel density of 441 ppi. Its home button is similar to its predecessor and is mainly touch-based with adjustable haptic feedback. The phone itself weighs 149 grams (5.26 oz) and uses a stainless steel frame. The device is currently available in three color finishes, black, white and rose gold.
TheXiaomi Mi 4 is powered by aQualcomm Snapdragon 801 (MSM8974-AC) chipset, which, at one point made it the fastestAndroidsmartphone to date according to theAnTuTu benchmark application. Its processor is aquad-core 2.5 GHz Krait 400 and its graphics card is an Adreno 330. The phone includes a 3080 mAh battery, which provides 280 hours of standby time. It comes with a 13 megapixel primary camera and an 8 megapixel secondary camera. Xiaomi also released another model ofMi 4 with 64 GB of internal memory.[5]
TheXiaomi Mi 4 was announced with a complementary US$12 smart accessory known as theXiaomi Mi Band which is a waterproof sleep-cycle smart alarm, fitness monitor, sleep tracker and remotesmartphone unlocker. It comes in various exchangeable bands and has a 30-day battery capacity.
The phone is compatible withCM13,CM14.1 and supports truedual-boot.[6][7]
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