LG K51 (K500UMT3) vs Asus Zenfone Zoom (ZX551ML 128GB)

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Side by side comparison between LG K51 vs Asus Zenfone Zoom (ZX551ML) phones, differences, pros, cons and full specifications. What's the better?

7/12/2020 10:57 PM, updated: 8/6/2020 1:52 PM

Compare Asus Zenfone Zoom (ZX551ML) X LG K51 (K500UMT3) 15Points

Specifications Compare Models Pictures

6.5"
IPS

720x1560

13
MP

13mp

3GB
RAM

Octa-core

4000
mAh

(Non removable)

12Points Asus Zenfone Zoom (ZX551ML 128GB) Compare LG K51 X

Specifications Compare Models Pictures

5.5"
IPS

1080x1920

13
MP

5mp

4GB
RAM

Quad-core

3000
mAh

(Non removable)

What's the better phone? LG K51 (K500UMT3)

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!

15 Advantages LG K51 (K500UMT3)	vs	12 Advantages Asus Zenfone Zoom (ZX551ML 128GB)
+Until 1TB microSD, microSDXC7 times More external storage for files using memory cards	vs	Until 128GB microSD, microSDXC
+8.47 millimeters (0.33 inches)42% Thinner	vs	12 millimeters (0.47 inches)
+6.5"18% Larger screen	vs	5.5"
+(triple camera) 13MP + 5MP + 2MP55% Higher resolution main camera	vs	(back) 13MP
+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas	vs	HDR photo only main camera
+f/1.8 (aperture)50% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/2.7 (aperture)
+(front) 13MP160% Higher resolution secondary camera to take pictures and selfies	vs	(front) 5MP
+(front) Full HD (1920x1080)125% More image quality for recording videos with the secondary camera	vs	(front) HD (1280x720)
+Android 10Advantage Android 10 is newer and safer	vs	Android 6.0 Marshmallow
+(4G LTE-A) 300 Mbps100% Faster for surfing the internet and download files	vs	(4G LTE) 150 Mbps
+Fingerprint sensor (rear-mounted)Advantage Sensors help you use the device	vs	Not supported
+4000 mAh33% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3000 mAh
+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster	vs	4.0 + A2DP
+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.	vs	MicroUSB 2.0, USB OTG On-The-Go
+MIL-STD-810G military certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example	vs	Not supported
2GHz 64bit Octa-core (12nm)	vs	+2.5GHz 64bit Quad-core5% More powerful processor, you can open your applications faster
3GB LPDDR3	vs	+4GB LPDDR333% More RAM memory. Typically more responsive and better for multitasking.
32GB (18GB available)	vs	+128GB (122GB available)6 times More internal storage for applications and files
204 grams (7.14 ounces)	vs	+185 grams (6.48 ounces)10% Lighter
Plastic body, glass front	vs	+Aluminum frame, glass front, leather backAdvantage More resistant material
720x1560 pixels	vs	+1080x1920 pixels85% Higher resolution screen
264 PPI	vs	+401 PPI52% Crisper display of text, images and videos because it has more pixels per inch (ppi)
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
EIS: Digital stabilization	vs	+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
10W	vs	+18W80% 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.
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely

19 Common items in both devices

TFT IPS LCD

16 million

PDAF: phase detection autofocus / LDAF: laser detection autofocus

Full HD (1920x1080)

4G LTE-A / 4G LTE

Capacitive

Multitouch

+12 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
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
Change model		Choose the model
Model	K51 (K500UMT3)	Zenfone Zoom (ZX551ML 128GB)
Other model names	LG K51 (T-Mobile) LMK500UMT3ATMOTN, LM-K500UMT3	Asus Zenfone Zoom ZX551ML (4G), Asus ZX551ML
Country or region available	USA	(Latin America), (Europe)
Brand	LG	Asus
Release date	5/1/2020	12/1/2015
Depth	8.47 millimeters (0.33 inches)	12 millimeters (0.47 inches)
Size (width x height)	77.92 x 166.96 millimeters (3.07 x 6.57 in)	78.8 x 158.9 millimeters (3.1 x 6.26 in)
Weight	204 grams (7.14 ounces)	185 grams (6.48 ounces)
Build, materials	Plastic body, glass front	Aluminum frame, glass front, leather back
Protection against water and others	MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.	Not supported
📲 Display
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
Display type	TFT IPS LCD	TFT IPS LCD
Screen size	6.5" inches	5.5" inches
Screen-to-body ratio	~79.7% (screen-to-body ratio)	~66.6% (screen-to-body ratio)
Display resolution	720x1560 pixels (19.5:9)	1080x1920 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	264 PPI	401 PPI
Colors	16 million	16 million
Scratch-resistant glass	Panda King Glass	Gorilla Glass 4
Refresh rate	60Hz	feature not registered
Display features	Not supported	feature not registered
🤖 Operating System
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
System version	Android 10	Android 5.0.2 Lollipop
Firmware update	feature not registered	Android 6.0 Marshmallow
User Interface	feature not registered	feature not registered
⚙️ Processor
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
Chipset	64bit: MediaTek Helio P22 (MT6762) (12nm)	64bit: Intel Atom Z3590 (22nm)
CPU	Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core)	Quad-core, 1 processor: 4x 2.5GHz Intel Silvermont (Quad-core)
GPU graphical controller	PowerVR GE8320 (650MHz)	PowerVR G6430 MP4
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
RAM memory	3GB LPDDR3	4GB LPDDR3
Internal storage	32GB (18GB available) eMMC 5.1	128GB (122GB available)
External storage	Until 1TB microSD, microSDXC (dedicated slot)	Until 128GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
Dual-SIM	Not supported	Not supported
SIM card	1 slot (Single-SIM) nano-SIM (4FF)	1 slot (Single-SIM) micro-SIM (3FF)
Maximum Download / Upload	300/50 Mbps	150/50 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	UMTS 850/900/1900/2100	UMTS 850/900/1900/2100
Primary 4G network	LTE Cat6 (1, 2, 3, 4, 5, 7, 12, 13, 20, 25, 26, 66, 71) TD-LTE (38, 41)	LTE Cat4 (Bands 1, 2, 3, 5, 7, 8, 9, 18, 19, 28)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE
Secondary 2G network	Not supported	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	Not supported
📷 Camera
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
Back camera (main camera)	(triple camera) 13 megapixels 5MP ultrawide f/2.21.12μm1/5"115° 2MP depth f/2.41.75μm1/5"85°	13 megapixels
Main camera resolution	4128x3096 pixels	4128x3096 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	Dual-LED flash
Focal aperture	f/1.8 (aperture)	f/2.7 (aperture)
Focal length	26mm lens	28mm lens
Sensor size	1/3" inches	feature not registered
Pixel size	1.12µm pixel	feature not registered
Autofocus	PDAF: phase detection autofocus	LDAF: laser detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	OIS: Optical stabilization
Zoom	Only digital zoom	Digital and optical 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 only main camera
Camera extras	feature not registered	feature not registered
📸 Front camera
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
Front camera (secondary)	13 megapixels	5 megapixels
Front camera resolution	4128x3096 pixels	2560x1920 pixels
Video recording (secondary)	Full HD (1920x1080)	HD (1280x720)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/3" inches	feature not registered
Pixel size	1.12µm pixel	feature not registered
🔉 Sound and multimedia
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	Not supported
Radio	Not supported	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.264, H.263
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, eAAC+
🔌 Connectivity
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	MicroUSB 2.0, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	5.0 + A2DP/LE	4.0 + A2DP
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO 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	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Not supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	4000 mAh	3000 mAh
Charger, watts	10W (5V/2A) Wired charging	18W Wired fast charging
Inductive / wireless charging	Not supported	feature not registered
Talk time autonomy	21 hours	feature not registered
Standby	576 hours (24 days)	feature not registered
➕ Other features
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
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: Titan gray • Google Assistant • DTS:X 3D sound surround • HAC M3/T3	• Colors: Black, White • Asus ZenUI • Hoya camera sensor • Laser autofocus camera (0.03 seconds) • 3x optical zoom camera • Dual tone flash • Fast battery charging: 60% in 40min • Beidou GPS • 5GB Asus Webstorage
☢️ Radiation rate
	LG K51 (K500UMT3)	Asus Zenfone Zoom (ZX551ML 128GB)
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