Mobile Geeks

ASUS ZenFone 4 Pro Review – A class behind

Design

A good looking phone that looks more midrange than high-end

Postive

Negative

Hardware

Positive

Negative

ASUS ZenFone 4 Pro Specifications

Display
  • 5.5-inch AMOLED
  • 1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
  • 70.3% screen-to-body ratio
  • Gorilla Glass 5
Processsor
  • Qualcomm MSM8998 Snapdragon 835
  • Octa-core (4×2.45 GHz Kryo & 4×1.9 GHz Kryo)
  • Adreno 540
RAM LPDDR4x 6GB
Internal Storage UFS 2.1  64/128 GB
Rear Camera Dual 12 MP (f/1.7, 25mm, OIS, 4-axis, PDAF & laser AF) + 16 MP (50mm), 2x optical zoom, Sony IMX351 image sensor
Front Camera 8 MP, f/1.9, 22mm, 1.4µm pixel size, phase detection autofocus, 1080p. Sony IMX319 image sensor
Operating System Android Oreo 7.1 (Oreo Update confirmed), Asus ZenUI 4.0
Battery Li-Ion 3600 mAh battery – Quick Charge
Network
  • Slot 1: 2G/3G/4G Nano SIM card

    Slot 2: 2G/3G/4G Nano SIM Card, or the MicroSD card (supports up to 2TB) at a time

    Both SIM card slots support 3G WCDMA / 4G LTE network band. But only one SIM card can connect to 3G WCDMA / 4G LTE service at a time.

  • LTE Cat12: UL 100 Mbps / DL 600 Mbps World wide version

    LTE Cat12: UL 150 Mbps / DL 600 Mbps (US/CA/BR/CO/JP/IN version)

    FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 17,19, 20, 28)

    TD-LTE (Bands 38, 39, 40, 41 (2545~2655MHz))

Connectivity
  • WiFi: 802.11 a/b/g/n/ac
  • Bluetooth®: BT 5.0
  • NFC: Ja
  • WiFi direct
  • USB-Anschluss: USB Type-C™ 3.1
  • USB-Funktionen: Aufladung, MTP, Tethering, DisplayPort, Audio, Power Delivery, OTG
Sensors
  • Live fingerprint sensor (0.3 seconds unlock, supports 5 fingerprints)
  • Accelerator
  • E-Compass
  • Gyroscope
  • Proximity sensor
  • Ambient light sensor
  • RGB sensor, Laser sensor
Audio
  • 3.5mm headphone
  • 5-magnet speaker with TI Smart Amp for up to 40% better performance
  • Hi-Res audio 192kHz/24-bit standard that is 4 times better than CD quality
  • DTS (Digital Theater System) Headphone:X™ 7.1 virtual surround sound for headphone support
Weight 175 Gramm
Dimentions 156.9 x 75.6 x 7.6 mm
Details
  • Glasrückseite
  • Dual-SIM
  • Kein Wireless Charging
IWhat’s in the Box
  • ZenFone 4 Pro

  • ASUS ZenEar Pro earphone with microphone

  • Type-C USB cable

  • Ejector pin (SIM tray needle)

  • USB power adapter (18W)

  • Documentation (user guide, warranty card)

  • Clear soft bumper (optional)

Camera

ZenFone 4 Pro, you get the same main camera behind a brighter f/1.7 lens, but this time the second camera does 2X optical zoom. Again, the secondary camera isn’t as good in low light — a common thing for dual-lens phones — with its f/2.6 lens. But you do at least get a hardware-enabled portrait mode in the ZenFone 4 Pro.

PixelMaster camera modes:
Auto (with low light and HDR features)
Beauty
Portrait
Selfie Panorama
GIF Animation
9 various filters
Video Recording
4K UHD (3840 by 2160) video recording at 30 fps for rear camera’s shake-free videos
1080p FHD video recording at 30 / 60 fps
720p HD video recording at 30 fps
3-axis electronic image stabilization for selfie and rear cameras
Slow Motion video (1080p at 120 fps / 720p at 240 fps)
Take still photo while recording video

Postive

Negative

Here are some sample photos:

Standard

2X Zoom

5X Digital Zoom

low light. photo quality quickly starts to degrade

2X Zoom looks more pixelated than good lighting conditions

Standard

Here are some low light samples, it performs well, the shutter speed is often very slow, even with HRD off, we’re disappointed because the Snapdragon 835 should be powerful enough for snappy low light performance.

These were taken in Pro mode and took several shots to reduce the noise. The ZenFone 4 Pro is capable of decent low light photos, just not in Auto.

Photo take in Auto at in a bar, if you’re looking for a low light point and shoot, this isn’t the phone for you.

The dual lens set up also allow for a portrait mode, in normal lighting it is acceptable, the edges are fairly accurate. However, we should note that what you see in the preview is way worse than what the photo looks like. This makes the phone feel much less premium and much more midrange, these kinds of UX details are what is starting to separate the top tier from the midrange.

Portrait mode in low light is very slow, so slow that I decided to include a sample photo of holding the phone for 3 seconds, thinking it was done and then realizing that it wasn’t. If there isn’t enough light the software has a hard time differentiating the edges and the results are not great. All phones have this problem, but most give you an indication that the photo is still being taken.

22 hours on a plane to Valencia, I looked much worse in person. Beauty settings on 25% strength.

Software

Postive

Negative

Sound

The dual-speakers aren’t good enough for serious music listening, but they’re clear and loud enough for some Netflix action. The addition of hi-res audio and DTS Headphone:X support are also a bonus for audiophiles and serious movie fans who want to experience virtual surround sound.

Positive

Negative

Performance

Game Genie

Apart from the camera lagging in low light, the ZenFone 4 Pro is a snappy beast.

PCMark Work 2.0 7462
AnTuTu 176791
3DMark 3733
Geekbench single 1902
Geekbench multicore 6203
GFX Bench T Rex Offscreen
GFX Bench Offscreen

Price

The ASUS ZenFone 4 Pro is currently available on Amazon for $799 which is too expensive for a handset with an outdated design. The large bezels at the top and bottom combined with the average low light camera performance make this seem like it should have more a midrange price tag rather than a high end one. When you compare the Samsung Galaxy S8 or LG G6 which both have sleeker designs and better cameras.