ZTE Axon M vs. Samsung Galaxy S21 Ultra 5G

Phone Comparison, Reviews and Tests

Side by side comparison and review of ZTE Axon M and Samsung Galaxy S21 Ultra 5G. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.

Phone Specifications Comparison

ZTE Axon M vs. Samsung Galaxy S21 Ultra 5G Comparison Chart
DESIGN AND DIMENSIONS ZTE Axon M Samsung Galaxy S21 Ultra 5G
Product Type Smartphone Smartphone
Manufacturer Model Number - SM-G998B/DS
Form Factor Touch - dual screen Touch
Height 150.8 mm 161.5 mm Samsung Galaxy S21 Ultra 5G has greater height than ZTE Axon M.
Width 71.6 mm 75.6 mm Samsung Galaxy S21 Ultra 5G has greater width than ZTE Axon M.
Depth 12.1 mm 8.9 mm Samsung Galaxy S21 Ultra 5G is narrower than ZTE Axon M.
Weight 230 g 227 g Samsung Galaxy S21 Ultra 5G is lighter than ZTE Axon M.
Body Colour Carbon black Phantom silver | Phantom black | Phantom navy | Phantom brown | Phantom titanium
Protection - Dustproof, splashproof, water-resistant
Waterproof (Water-resistant) - Yes Samsung Galaxy S21 Ultra 5G is waterproof.
IP rating - IP68
SAR Value 1.2 W/kg (body), 1.05 W/kg (head) 1.58 W/kg (body), 0.714 W/kg (head), 2.56 W/kg (limb)
Connector Type Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM Nano SIM, Electronic SIM card (e-SIM)
SIM Card Qty Single-SIM Dual-SIM
DISPLAY ZTE Axon M Samsung Galaxy S21 Ultra 5G
Display Type LCD display OLED display
Display Technology TFT Infinity-O Dynamic AMOLED 2X
Screen Size (Display Size) 5.2" 6.8" Samsung Galaxy S21 Ultra 5G has larger screen size than ZTE Axon M.
Screen Resolution (Display Resolution) 1920 x 1080 pixels 3200 x 1440 pixels Samsung Galaxy S21 Ultra 5G has better screen resolution than ZTE Axon M.
Display Format Full HD QHD+
Pixel Density 426 ppi 515 ppi Samsung Galaxy S21 Ultra 5G has better pixel density than ZTE Axon M.
Colour Depth 16.7 million colours 16.7 million colours Both phones have the same color depth.
HDR - Yes Samsung Galaxy S21 Ultra 5G has HDR.
HDR Technology - HDR10+
Display Enhancement Technology - Eye Comfort Shield
Display Refresh Rate - 120 Hz
Display Features 2.5D Glass Edge Screen, AOD(Always On Display)
Display Protection (Screen Protector) Corning Gorilla Glass 5 (scratch resistant glass) Corning Gorilla Glass Victus (scratch resistant glass)
SECOND DISPLAY
Second Display Type LCD display - colour -
Second Display Screen Size 5.2" -
Second Display Resolution 1920 x 1080 pixels -
Second Display Colour Depth 16.7 million colours -
PROCESSOR ZTE Axon M Samsung Galaxy S21 Ultra 5G
Processor Type (CPU) Qualcomm Snapdragon 821 Samsung Exynos 2100
Processor Number MSM8996 -
Clock Speed 2.15 GHz 2.9 GHz Samsung Galaxy S21 Ultra 5G has higher clock speed than ZTE Axon M.
Processor Core Qty Quad-core 8-core Samsung Galaxy S21 Ultra 5G has higher processor core quantity than ZTE Axon M.
64-bit Architecture Yes - ZTE Axon M has 64-bit architecture.
Graphics System (GPU) - Mali-G78 MP14
MEMORY ZTE Axon M Samsung Galaxy S21 Ultra 5G
RAM 4 GB LPDDR5 SDRAM - 12 GB Samsung Galaxy S21 Ultra 5G has more RAM than ZTE Axon M.
Internal Memory Size (Storage Capacity) 64 GB 128 GB Samsung Galaxy S21 Ultra 5G has more internal memory than ZTE Axon M.
User Memory - 101.7 GB
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 256 GB -
CAMERA ZTE Axon M Samsung Galaxy S21 Ultra 5G
MAIN CAMERA
Number of Main Cameras 0 4
Sensor Resolution - 12 Megapixel
Lens Type - Ultra wide-angle lens
Lens Aperture - F/2.2
Field of View (FoV) - 120 degree(s)
Pixel Size - 1.4 μm
Optical Image Stabiliser (OIS) - Optical Image Stabiliser (OIS) Samsung Galaxy S21 Ultra 5G has optical stabilisation.
Focus Adjustment - Automatic
Laser Auto Focus - Yes
Optical Zoom - 3x
Digital Zoom - 100x
Self-Timer Delay - Yes
Special Effects - Face retouch, Grid Line
HDR Mode - Auto HDR mode
Camera Modes - Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Night, Motion Photo, Mountain, Single Take, Pro Video, Director's View
Light Source - High CRI LED flash
Video Resolutions - 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, 7680 x 4320 (UHD 8K) at 24fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps
Camera Features (Functions) - Playback zoom, blink detection, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, Scene Optimiser, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, Quick Measure, Zoom-In Mic, Space Zoom, Take 33MP still photos while playing 8K video, Hybrid Optic Zoom 3x, Super Resolution Zoom up to 30x, Digital zoom up to 12x for video
SECOND CAMERA
Sensor Resolution (2nd Camera) - 108 Megapixel
Sensor Size (2nd Camera) - 1/1.33"
Lens Type (2nd Camera) - Wide-angle lens
Lens Aperture (2nd Camera) - F/1.8
Field of View (2nd Camera) - 83 degree(s)
Pixel Size (2nd Camera) - 0.8 μm
Camera Features (2nd Camera) - Phase Detect Auto-Focus (PDAF), OIS (Optical Image Stabilisation)
THIRD CAMERA
Sensor Resolution (3rd Camera) - 10 Megapixel
Lens Type (3rd Camera) - Telephoto lens
Lens Aperture (3rd Camera) - F/2.4
Field of View (3rd Camera) - 35 degree(s)
Pixel Size (3rd Camera) - 1.22 μm
Camera Features (3rd Camera) - Dual Pixel AF
FOURTH CAMERA
Sensor Resolution (4th Camera) - 10 Megapixel
Lens Type (4th Camera) - Telephoto lens
Lens Aperture (4th Camera) - F/4.9
Field of View (4th Camera) - 10 degree(s)
Pixel Size (4th Camera) - 1.22 μm
Camera Features (4th Camera) - Dual Pixel AF
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 20 Megapixel 40 Megapixels Samsung Galaxy S21 Ultra 5G has better front camera resolution than ZTE Axon M.
Lens Aperture (Front) - F/2.2
Field of View (Front) - 80 degree(s)
Pixel Size (Front) - 0.7 μm
Focus Adjustment Automatic Automatic
Light Source (Front) LED light -
Video Resolutions (Front) 3840 x 2160 (4K) at 30 fps -
Camera Features (Front) Rear camera mode Phase Detect Auto-Focus (PDAF)
BATTERY AND CHARGING ZTE Axon M Samsung Galaxy S21 Ultra 5G
Battery Capacity (Battery Size) 3180 mAh 5000 mAh Samsung Galaxy S21 Ultra 5G has larger battery capacity than ZTE Axon M.
Fast Charging Technology Qualcomm Quick Charge 3.0 Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Samsung Super Fast Charging, Power Delivery 3.0 Both phones have fast charging technology.
Wireless Charging - Yes Samsung Galaxy S21 Ultra 5G can be charged wirelessly.
Wireless Charging Standards - WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare
Standby Time 290 hours -
Talk Time 1722 minutes 2460 minutes Samsung Galaxy S21 Ultra 5G has longer battery life when making calls than ZTE Axon M.
Run Time Details Talk: up to 1722 min
Standby: up to 290 hrs
Talk (4G): up to 2460 min
Active online usage (LTE): up to 18 hrs
Active online usage (Wi-Fi): up to 18 hrs
Playback (wireless video): up to 22 hrs
Playback (wireless audio): up to 81 hrs
Battery Technology Lithium Ion -
CELLULAR ZTE Axon M Samsung Galaxy S21 Ultra 5G
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 5G Samsung Galaxy S21 Ultra 5G has more advanced generation mobile network.
Operating System Android 7.1.2 (Nougat) Android 11
Intelligent Assistant - Bixby
Payment Technology - Samsung Pay
Navigation GPS, A-GPS, GLONASS GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS ZTE Axon M Samsung Galaxy S21 Ultra 5G
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, LTE Advanced FDD-LTE, TDD-LTE, 5G NR FR1
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band - Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency - 2100, 1900, 1700, 850, 900
4G LTE Band Band 2, Band 4, Band 5, Band 12, Band 29, Band 30, Band 66 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66
4G LTE Frequency FDD 1900 PCS, FDD 1700 - 2110 AWS, FDD 850, FDD 700a, FDD 700d, FDD 2300 WCS, FDD 1700 - 2110 AWS-3 FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3
5G NR Band - N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n77, n78, n40
5G NR Frequency - FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3700, TDD TD 3500, TDD 2300
Wireless Interface IEEE 802.11ac/b/g/n IEEE 802.11a/b/g/n/ac/ax
Bluetooth Bluetooth 4.2 Bluetooth 5.2
NFC Yes Yes Both phones have an NFC reader for mobile payments.
Messaging Services SMS, MMS -
MEDIA ZTE Axon M Samsung Galaxy S21 Ultra 5G
Supported Digital Audio Standards - WAV, WMA, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, DSD, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128
Supported Digital Video Standards - MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4
Sound Enhancements Dolby Atmos sound technology Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound
Audio Processor AKM 4962 -
FEATURES ZTE Axon M Samsung Galaxy S21 Ultra 5G
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors - Accelerometer, ambient light sensor, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor
Security Devices Fingerprint reader Fingerprint reader (under display), face recognition
Additional Phone Features TTY compatible, software updates FOTA (Firmware Over The Air) Air View, MIMO technology, Smart Select, Samsung KNOX, Smart View, Live message, Screen off memo, Bixby Vision, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, AR Doodle, PENUP, Bixby key, Samsung Knox Vault, Private Share function, Enhanced Game Booster, Air Command
OTHERS ZTE Axon M Samsung Galaxy S21 Ultra 5G
Included Accessories Power adapter, USB-C cable SIM card removal tool, USB-C to USB-C cable
Compliant Standards HAC (Hearing Aid Compatible) IP68, HAC (Hearing Aid Compatible)
Max Depth of Water Resistance - 1.5 m
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