Xiaomi Redmi 6 (64GB Global) vs Asus Zenfone 3 Ultra (ZU680KL 64GB)

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Side by side comparison between Xiaomi Redmi 6 vs Asus Zenfone 3 Ultra phones, differences, pros, cons and full specifications. What's the better?

11/4/2018 9:25 PM, updated: 5/11/2020 10:17 AM

Compare Asus Zenfone 3 Ultra X Xiaomi Redmi 6 (64GB Global) 05Points

Specifications Compare Models Pictures

5.45"
IPS

720x1440

12
MP

5mp

4GB
RAM

Octa-core

3000
mAh

(Non removable)

18Points Asus Zenfone 3 Ultra (ZU680KL 64GB) Compare Xiaomi Redmi 6 X

Specifications Compare Models Pictures

6.8"
IPS+

1080x1920

23
MP

8mp

4GB
RAM

Octa-core

4600
mAh

(Non removable)

What's the better phone? Asus Zenfone 3 Ultra (ZU680KL 64GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

5 Advantages Xiaomi Redmi 6 (64GB Global)	vs	18 Advantages Asus Zenfone 3 Ultra (ZU680KL 64GB)
+2GHz 64bit Octa-core (12nm)15% More powerful processor, you can open your applications faster	vs	1.8GHz 64bit Octa-core
+146 grams (5.11 ounces)60% Lighter	vs	233 grams (8.16 ounces)
+Android 8.1 OreoAdvantage Android 8.1 Oreo is newer and safer	vs	Android 8.0 Oreo
+Face unlock 2DAdvantage Sensors help you use the device	vs	Not supported
+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.	vs	2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)
4GB LPDDR3	vs	+4GB LPDDR4Advantage This RAM type is better and more efficient.
8.3 millimeters (0.33 inches)	vs	+6.8 millimeters (0.27 inches)22% Thinner
720x1440 pixels	vs	+1080x1920 pixels100% Higher resolution screen
295 PPI	vs	+324 PPI10% Crisper display of text, images and videos because it has more pixels per inch (ppi)
5.45"	vs	+6.8"25% Larger screen
(dual camera) 12MP + 5MP	vs	+(back) 23MP34% Higher resolution main camera
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
EIS: Digital stabilization	vs	+OIS (4-axis): Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
f/2.2 (aperture)	vs	+f/2.0 (aperture)10% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 5MP	vs	+(front) 8MP63% Higher resolution secondary camera to take pictures and selfies
Full HD (1920x1080)	vs	+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera
(4G LTE) 150 Mbps	vs	+(4G LTE-A) 300 Mbps100% Faster for surfing the internet and download files
Not supported	vs	+GyroscopeAdvantage Sensors help you use the device
3000 mAh	vs	+4600 mAh53% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
5W	vs	+18W3 times More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.
802.11 b/g/n [wifi4]	vs	+802.11 a/b/g/n/ac [wifi5]Advantage WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster
MicroUSB 2.0, USB OTG On-The-Go	vs	+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.
Not supported	vs	+Gorilla Glass 4Advantage Protection against scratches on the screen lets you carry your phone with your keys

27 Common items in both devices

64GB (51GB available) / 64GB (55GB available)

Until 256GB microSD, microSDXC

TFT IPS LCD / TFT Super IPS+

16 million

Only digital zoom

PDAF: phase detection autofocus / LDAF/PDAF: laser/phase detection autofocus

HDR photo on both cameras

+20 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

📱 Model features
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
Change model		Choose the model
Model	Redmi 6 (64GB Global)	Zenfone 3 Ultra (ZU680KL 64GB)
Other model names	Xiaomi Redmi 6 Global 4GB RAM + 64GB, Xiaomi Cereus	Asus Zenfone 3 Ultra 4GB/64GB ZU680KL Dual-Sim, Asus Mercury
Country or region available	(Global, International), (Europe), India, Taiwan	(Global, International)
Brand	Xiaomi	Asus
Release date	6/1/2018	8/1/2016
Depth	8.3 millimeters (0.33 inches)	6.8 millimeters (0.27 inches)
Size (width x height)	71.5 x 147.5 millimeters (2.81 x 5.81 in)	93.9 x 186.4 millimeters (3.7 x 7.34 in)
Weight	146 grams (5.11 ounces)	233 grams (8.16 ounces)
Build, materials	Plastic body, glass front	feature not registered
Protection against water and others	Not supported	Not supported
📲 Display
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
Display type	TFT IPS LCD	TFT Super IPS+
Screen size	5.45" inches	6.8" inches
Screen-to-body ratio	~72.7% (screen-to-body ratio)	~72.8% (screen-to-body ratio)
Display resolution	720x1440 pixels	1080x1920 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch 10-points
Pixel density (dot pitch)	295 PPI	324 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 4
Refresh rate	feature not registered	feature not registered
Display features	feature not registered	feature not registered
🤖 Operating System
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
System version	Android 8.1 Oreo	Android 6.0.1 Marshmallow
Firmware update	feature not registered	Android 8.0 Oreo
User Interface	feature not registered	feature not registered
⚙️ Processor
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
Chipset	64bit: MediaTek Helio P22 (MT6762) (12nm)	64bit: Qualcomm Snapdragon 652 MSM8976 (28nm)
CPU	Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core)	Octa-core, 2 processors: 4x 1.8GHz ARM Cortex-A72 (Quad-core) 4x 1.4GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	PowerVR GE8320 (650MHz)	Qualcomm Adreno 510 600Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
RAM memory	4GB LPDDR3	4GB LPDDR4
Internal storage	64GB (51GB available) eMMC 5.1	64GB (55GB available)
External storage	Until 256GB microSD, microSDXC (dedicated slot)	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) micro-SIM (3FF) and nano-SIM (4FF)
Maximum Download / Upload	150/50 Mbps	300/50 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	M1804C3DG version: UMTS 850/900/1900/2100 M1804C3DH version: UMTS 850/900/1700/1900/2100	Global version: UMTS 800/850/900/1900/2100 China version: CDMA2000, TD-SCDMA 1900/2000 UMTS 800/850/900/1900/2100
Primary 4G network	LTE Cat4 VoLTE M1804C3DG version: LTE (Bands 1,2,3,4,5,7,8,20) TD-LTE (Bands 38,40) M1804C3DH version: LTE (Bands 1,2,3,4,5,7,8,28) TD-LTE (Bands 38,40)	LTE Cat6 Global version: LTE (Bands 1,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,40,41) China version: LTE (Bands 1,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,39,40,41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE	GPRS, EDGE, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE
📷 Camera
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
Back camera (main camera)	(dual camera) 12 megapixels 5MP depth f/2.21.12μm	23 megapixels
Main camera resolution	4000x3000 pixels	5520x4140 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	4K UHD (3840x2160) 24 fps
Flash	LED flash	Dual-LED flash
Focal aperture	f/2.2 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	1/2.6" inches
Pixel size	1.25µm pixel	1.12µm pixel
Autofocus	PDAF: phase detection autofocus	LDAF/PDAF: laser/phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	OIS (4-axis): Optical stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
Front camera (secondary)	5 megapixels	8 megapixels
Front camera resolution	2560x1920 pixels	3264x2448 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	1.12µm pixel	feature not registered
🔉 Sound and multimedia
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263, XviD	MP4, H.264, H.263
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, eAAC+, FLAC
🔌 Connectivity
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
USB	MicroUSB 2.0, USB OTG On-The-Go	USB 2.0 Type-C reversible connector
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	USB Type-C SlimPort®
Bluetooth	4.2 + A2DP	4.2 + A2DP
WiFi	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Not supported	Not supported
Infrared port	Not supported	Supported
🧭 Sensors
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Proximity sensor	Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Hall effect Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	3000 mAh	4600 mAh
Charger, watts	5W (5V/1A) Wired charging	18W (9V/2A) Wired fast charging
Inductive / wireless charging	feature not registered	feature not registered
Talk time autonomy	feature not registered	34 hours (1.4 days)
Standby	feature not registered	feature not registered
➕ Other features
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Grey, Blue, Gold, Rose Gold • 2.5D curved glass screen • 18:9 screen • MIUI 9.6	• Colors: Titanium Gray, Glacier Silver, Rose Gold • USB OTG On-The-Go • Asus ZenUI 3.0 • Sony IMX318 sensor camera • DTS headphone • Hi-Res audio 192kHz/24bit • Quick Charge 3.0 • Fast charging battery: 60% in 45min • Miracast
☢️ Radiation rate
	Redmi 6 (64GB Global)	Asus Zenfone 3 Ultra (ZU680KL 64GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered