Sharp Aquos S3 (High edition 128GB) vs HMD XR21

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Side by side comparison between Sharp Aquos S3 vs HMD XR21 phones, differences, pros, cons and full specifications. What's the better?

2/2/2026 5:48 PM, updated: 2/2/2026 6:11 PM

Compare HMD XR21 X Sharp Aquos S3 (High edition 128GB) 07Points

Specifications Compare Models Pictures

6"
IGZO

1080x2160

12
MP

16mp

6GB
RAM

Octa-core

3200
mAh

(Non removable)

20Points HMD XR21 Compare Sharp Aquos S3 X

Specifications Compare Models Pictures

6.49"
IPS

1080x2400

64
MP

16mp

6GB
RAM

Octa-core

4800
mAh

(Non removable)

What's the better phone? HMD XR21

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!

7 Advantages Sharp Aquos S3 (High edition 128GB)	vs	20 Advantages HMD XR21
+128GB (114GB available)13% More internal storage for applications and files	vs	128GB (101GB available)
+Until 256GB microSD, microSDXCAdvantage More external storage for files using memory cards	vs	Not supported
+167 grams (5.85 ounces)38% Lighter	vs	231 grams (8.09 ounces)
+8 millimeters (0.31 inches)31% Thinner	vs	10.45 millimeters (0.41 inches)
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures	vs	Only digital zoom
+Qi wireless chargingAdvantage Wireless charging is another way to charge the battery.	vs	Not supported
2.2GHz 64bit Octa-core	vs	+2.2GHz 64bit Octa-core (6nm)7% More powerful processor, you can open your applications faster
TFT-IGZO	vs	+TFT IPS LCDAdvantage TFT IPS LCD display is brighter and more vivid
1080x2160 pixels	vs	+1080x2400 pixels11% Higher resolution screen
402 PPI	vs	+406 PPI1% Crisper display of text, images and videos because it has more pixels per inch (ppi)
6"	vs	+6.49"8% Larger screen
(dual camera) 12MP + 13MP	vs	+(dual camera) 64MP + 8MP188% Higher resolution main camera
EIS: Digital stabilization	vs	+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
1/2.55" inches	vs	+1/2" inches28% The larger sensor camera lets you take photos with better depth.
Android 8.0 Oreo	vs	+Android 14Advantage Android 14 is newer and safer
4G LTE-A	vs	+5G SA/NSAAdvantage The 5G SA/NSA network is newer and faster
(4G LTE-A) 300 Mbps	vs	+(5G SA/NSA) 2000 Mbps6 times Faster for surfing the internet and download files
Not supported	vs	+BarometerAdvantage Sensors help you use the device
3200 mAh	vs	+4800 mAh50% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
18W	vs	+33W83% 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.
2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)	vs	+2 slots (Dual-SIM) + e-SIM (Eletronic)Advantage You can have more mobile carriers/operators on the same device.
Not supported	vs	+FMAdvantage The radio lets you listen to your songs and sports in general
802.11 a/b/g/n/ac [wifi5]	vs	+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster
5.0 + A2DP/LE	vs	+5.1 + A2DP/LEAdvantage Bluetooth 5.1 + A2DP/LE is newer and faster
Not supported	vs	+IP68/IP69K certified, MIL-STD-810G military certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

29 Common items in both devices

6GB LPDDR4X

16 million

Dual-LED flash

PDAF: phase detection autofocus

HDR photo on both cameras

f/1.8 (aperture)

(front) 16MP

+22 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
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
Change model
Model	Aquos S3 (High edition 128GB)	HMD XR21
Other model names	Sharp Aquos S3 6GB RAM + 128GB FS8015	HMD XR21 TA-1592
Country or region available	China, Hong Kong, Taiwan, Vietnam	(Global, International)
Brand	Sharp	HMD
Release date	6/1/2018	5/1/2024, Announced: 5/14/2024
Depth	8 millimeters (0.31 inches)	10.45 millimeters (0.41 inches)
Size (width x height)	74.2 x 148.2 millimeters (2.92 x 5.83 in)	78.58 x 168 millimeters (3.09 x 6.61 in)
Weight	167 grams (5.85 ounces)	231 grams (8.09 ounces)
Build, materials	Aluminum frame, glass front/back	Plastic body, glass front
Protection against water and others	Not supported	IP68/IP69K certified: water-resistant up to 1.5 meters for 30min, dust-resistant, plus high-pressure and steam-washable. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.
📲 Display
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
Display type	TFT-IGZO	TFT IPS LCD
Screen size	6" inches	6.49" inches
Screen-to-body ratio	~84.5% (screen-to-body ratio)	~77% (screen-to-body ratio)
Display resolution	1080x2160 pixels	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	402 PPI	406 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass	Gorilla Glass Victus
Refresh rate	feature not registered	120Hz
Display features	feature not registered	450nits[typ], 550nits[peak]
🤖 Operating System
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
System version	Android 8.0 Oreo	Android 13
Firmware update	feature not registered	Android 14
User Interface	feature not registered	feature not registered
⚙️ Processor
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
Chipset	64bit: Qualcomm Snapdragon 660 SDM660 (14nm)	64bit: Qualcomm Snapdragon 695 (SM6375) (6nm)
CPU	Octa-core, 2 processors: 4x 2.2GHz Kryo 260 Gold (Quad-core) 4x 1.8GHz Kryo 260 Silver (Quad-core)	Octa-core, 2 processors: 2x 2.2GHz Kryo 660 Gold (Dual-core) 6x 1.7GHz Kryo 660 Silver (Hexa-core)
GPU graphical controller	Qualcomm Adreno 512 650Mhz	Qualcomm Adreno 619 (840MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
RAM memory	6GB LPDDR4X	6GB LPDDR4X
Internal storage	128GB (114GB available)	128GB (101GB available) UFS 2.2
External storage	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Not supported
📶 Mobile networks
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
Dual-SIM	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)	Dual-SIM Standby - Call active on one sim card
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF) + e-SIM
Maximum Download / Upload	300/50 Mbps	2000/1024 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G, 5G
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	CDMA 800, GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat6 (Bands 1,3,4,5,7,8,12,17,28) TD-LTE (Bands 34,38,39,40,41)	LTE Cat15 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 32, 66, 71) TD-LTE (38, 39, 40, 41, 42, 43, 48) VoLTE
Primary 5G network	Not supported	SA/NSA (1, 2, 3, 5, 7, 8, 20, 25, 28, 38, 40, 41, 48, 66, 71, 77, 78, 79)
Primary data network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	UMTS 850/900/1700/1900/2100
Secondary 4G network	Not supported	LTE Cat15 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 32, 66, 71) TD-LTE (38, 39, 40, 41, 42, 43, 48) VoLTE
Secondary data network	GPRS, EDGE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
📷 Camera
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
Back camera (main camera)	(dual camera) 12 megapixels 13MP	(dual camera) 64 megapixels 8MP ultrawide f/2.21/4"1.12µm
Main camera resolution	4000x3000 pixels	10120x6328 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	Dual-LED flash	Dual-LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/2.55" inches	1/2" inches
Pixel size	1.4µm pixel	feature not registered
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	OIS: Optical stabilization
Zoom	Digital and optical zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	1080p@30fps
📸 Front camera
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
Front camera (secondary)	16 megapixels	16 megapixels
Front camera resolution	4608x3456 pixels	4608x3456 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	feature not registered
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
🔉 Sound and multimedia
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
Loudspeaker	Supported	Stereo sound with dual speakers
Active noise cancellation	2 microphones or more	2 microphones
Radio	Not supported	FM
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	USB Type-C (reversible)
Bluetooth	5.0 + A2DP/LE	5.1 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, NavIC
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
Battery type	Li-Ion: lithium-ion (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3200 mAh	4800 mAh
Charger, watts	18W (9V/2A) Wired fast charging	33W Wired fast charging Reverse charging by cable Quick Charge 3 USB Power Delivery 2.0
Inductive / wireless charging	Qi wireless charging	Not supported
Talk time autonomy	feature not registered	48 hours (2 days)
Standby	feature not registered	feature not registered
➕ Other features
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder, Voice commands
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: Black, Gold • 2.5D glass screen • Quick Charge 3.0 • Qi wireless charging 7.5W	• Colors: Midnight Black
☢️ Radiation rate
	Sharp Aquos S3 (High edition 128GB)	HMD XR21
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