Xiaomi Mi 4 

Released July, 2014
  • Android 6.0
  • 4G
  • 5"
  • Quad core 2.5 GHz
The Mi 4 is defined by its stout stainless steel frame that adds just enough heft to the device to make it worth obsessing over its safety, even though it appears to be well-equipped to handle accidental bumps and even small drops.
by PhoneArena (Dec, 2014)
Heavier pages aren't handled as well as with Chrome, but those are becoming more and more rare on mobile, so most of the time you're getting a smooth experience.
by PhoneArena (Dec, 2014)
7.4 Out of 10

PhoneRocket Review Our evaluation of the Xiaomi Mi 4


Processing power and speed

Xiaomi Mi 4
Redmi 3S


3D and 2D graphics

Xiaomi Mi 4
Redmi 3S
AnTuTu 3D, GLBenchmark 2.5 and GLBenchmark 2.7

Battery Life

How long will the battery last

Xiaomi Mi 4
Redmi 3S
Battery capacity


How do our trusted review sites rank these products?

Xiaomi Mi 4
Redmi 3S
Reviews from gsmarena.com, phonearena.com and fudzilla.com


PhoneRocket Score

Performance, Graphics, Battery Life and Reviews

Xiaomi Mi 4
Redmi 3S

Benchmarks Real world tests of the Xiaomi Mi 4

passmark Processor performance including multiple coresData courtesy Passmark

Xiaomi Mi 4
iPhone 6
Redmi 3

Reviews Word on the street for the Xiaomi Mi 4

At the front, we're looking at an equally impressive-sounding, 8-megapixel, 5-lens Sony Exmor R sensor (IMX219, we suspect) with f/1.8 aperture.

What People Are Saying Give it to me straight


It's an attractive, bright, and sharp display, but it's not perfect.
by PhoneArena (Dec, 2014)
Thankfully, the laminated cover glass is not nearly as reflective as the one on the Xiaomi Mi3, so outdoor visibility is also good.
by PhoneArena (Dec, 2014)
Indeed, even with the optimal “Warm” color profile on, the display's measured color temperature of 7392 K falls north from the reference value of 6500 K and the image has a slight purplish tint.
by PhoneArena (Dec, 2014)


That's understandable, though: the 13-megapixel, 1/3.06” sensor has a very wide, f/1.8 aperture lens and offers extremely quick auto focus (less than a third of a second).
by PhoneArena (Dec, 2014)
As for indoor shots in medium-lit environments, we quite liked what the Mi 4 has to offer – stills are excellent in terms of both color reproduction and exposure.
by PhoneArena (Dec, 2014)
All sounds great so far, but what do the actual snaps the two cameras produce look like?
by PhoneArena (Dec, 2014)


The juicer is also fairly quick when it comes to regaining its charge – it needed 126 minutes to go from zero to 100% when using the wall charger provided in the box.
by PhoneArena (Dec, 2014)
The 3080 mAh unit is quite generous, and our tests show that it is quite the performer, too.
by PhoneArena (Dec, 2014)
Anyway, the Xiaomi Mi 4 clocked the excellent 8 hours 32 minutes on our custom battery life benchmark, which puts it alongside some of the all-time highest-scoring devices we've tested.
by PhoneArena (Dec, 2014)


Night shots are also nothing to write home about – the special Handheld Twilight mode helps a tad by making details previously veiled in darkness a bit more visible, but that does come at the expense of noise.
by PhoneArena (Dec, 2014)
While a number of Chinese manufacturers are always trying to clone Apple's products, we have a different approach with the Xiaomi Mi4 – the company might borrow a detail here and there, but it then goes off in its own direction.
by PhoneArena (Dec, 2014)
Once it figures that and irons out a few details, the West will be ripe for the taking, granted that it sticks to the same formula.
by PhoneArena (Dec, 2014)

Network technology

Unfortunately, LTE is also missing on our version of the Mi 4 – that perk is currently reserved for a different version of the Mi 4 that won't work with most carriers around the globe.
by PhoneArena (Dec, 2014)
In fact, if it weren't for the Mi 4's Achilles' heel, the rear camera and its lack of LTE, we'd have a hard time justifying anything less than a chart-topping score for the Mi 4 – it's superbly-crafted, has an attractive, speedy and feature-filled interface, and can last you for two days straight.
by PhoneArena (Dec, 2014)

Specifications Full list of technical specs


Type Super IPS LCD2
Size 5"
Resolution 1920 x 1080
PPI 440 ppi


Clock speed 2.5 GHz
Number of cores Quad core
Internal storage 64 GB

photo & video

Camera 13 MP
Resolution 13 MP
Flash Yes
Secondary camera 8 MP
Video resolution 3840 x 2160 @ 30 fps


Generation 4G
  1. HSUPA (5.76 Mb/s)
  2. GPRS (0.01 Mb/s)
  3. UMTS (0.38 Mb/s)
  4. EDGE (0.38 Mb/s)
  5. HSDPA+ (21.1 Mb/s)
  6. LTE (20 Mb/s)
  7. HSDPA+ (42.2 Mb/s)
  8. GSM (0.01 Mb/s)


Standby time 16,848 min
Capacity 3,080 mA·h

form factor

Weight 149 g
Thickness 8.9 mm
Size 68.5 x 139.2 x 8.9 mm


Has an assisted GPS Yes


Supports FM radio No


Operating system Android 6.0
Multitasking Yes
App store Android Market
Adobe flash support No
App store size 850,000 apps


Acts as a wi-fi hotspot Yes
Supports NFC Yes
Bluetooth Bluetooth v4.0
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