HMD XR21 vs Sonim XP8

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Side by side comparison between HMD XR21 vs Sonim XP8 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 Sonim XP8 X HMD XR21 25Points

Specifications Compare Models Pictures

6.49"
IPS

1080x2400

64
MP

16mp

6GB
RAM

Octa-core

4800
mAh

(Non removable)

04Points Sonim XP8 Compare HMD XR21 X

Specifications Compare Models Pictures

5"
IPS

1080x1920

12
MP

8mp

4GB
RAM

Octa-core

4900
mAh

(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!

25 Advantages HMD XR21	vs	4 Advantages Sonim XP8
+2.2GHz 64bit Octa-core (6nm)7% More powerful processor, you can open your applications faster	vs	2.2GHz 64bit Octa-core (14nm)
+6GB LPDDR4X50% More RAM memory. Typically more responsive and better for multitasking.	vs	4GB LPDDR4
+128GB (101GB available)124% More internal storage for applications and files	vs	64GB (45GB available)
+UFS 2.2Advantage Fastest write and read storage.	vs	eMMC 5.1
+231 grams (8.09 ounces)45% Lighter	vs	335 grams (11.73 ounces)
+10.45 millimeters (0.41 inches)72% Thinner	vs	18 millimeters (0.71 inches)
+120Hz100% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.	vs	60Hz
+1080x2400 pixels25% Higher resolution screen	vs	1080x1920 pixels
+6.49"30% Larger screen	vs	5"
+(dual camera) 64MP + 8MP5 times Higher resolution main camera	vs	(back) 12MP
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	LED flash
+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness	vs	Not supported
+(front) 16MP99% Higher resolution secondary camera to take pictures and selfies	vs	(front) 8MP
+Android 14Advantage Android 14 is newer and safer	vs	Android 10
+5G SA/NSAAdvantage The 5G SA/NSA network is newer and faster	vs	4G LTE-A
+(5G SA/NSA) 2000 Mbps2 times Faster for surfing the internet and download files	vs	(4G LTE-A) 600 Mbps
+Face unlock 2DAdvantage Sensors help you use the device	vs	Not supported
+Fingerprint sensor (side-mounted)Advantage Sensors help you use the device	vs	Not supported
+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.	vs	18W
+2 slots (Dual-SIM) + e-SIM (Eletronic)Advantage You can have more mobile carriers/operators on the same device.	vs	2 slots (Dual-SIM) (dedicated slot)
+Stereo sound with dual speakersAdvantage Better sound quality for listening to music or clearer hands-free calls	vs	Mono sound with dual speakers
+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores	vs	proprietary audio output
+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster	vs	802.11 a/b/g/n/ac [wifi5]
+5.1 + A2DP/LEAdvantage Bluetooth 5.1 + A2DP/LE is newer and faster	vs	5.0 + A2DP/LE
Not supported	vs	+Until 512GB microSD, microSDXCAdvantage More external storage for files using memory cards
406 PPI	vs	+441 PPI9% Crisper display of text, images and videos because it has more pixels per inch (ppi)
4800 mAh	vs	+4900 mAh2% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
LiPo: li-ion polymer (Non removable)	vs	+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily

27 Common items in both devices

Plastic body, glass front

TFT IPS LCD

16 million

Only digital zoom

PDAF: phase detection autofocus

HDR photo on both cameras

Full HD (1920x1080)

+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
	HMD XR21	Sonim XP8
Change model
Model	HMD XR21	Sonim XP8
Other model names	HMD XR21 TA-1592	Sonim XP8 (XP8800), AT&T/Verizon
Country or region available	(Global, International)	(Global, International), Canada, USA
Brand	HMD	Sonim
Release date	5/1/2024, Announced: 5/14/2024	5/1/2018, Announced: 4/1/2018
Depth	10.45 millimeters (0.41 inches)	18 millimeters (0.71 inches)
Size (width x height)	78.58 x 168 millimeters (3.09 x 6.61 in)	79.5 x 152 millimeters (3.13 x 5.98 in)
Weight	231 grams (8.09 ounces)	335 grams (11.73 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	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.	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
	HMD XR21	Sonim XP8
Display type	TFT IPS LCD	TFT IPS LCD
Screen size	6.49" inches	5" inches
Screen-to-body ratio	~77% (screen-to-body ratio)	~57% (screen-to-body ratio)
Display resolution	1080x2400 pixels (20:9)	1080x1920 pixels (16:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	406 PPI	441 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass Victus	Gorilla Glass 3
Refresh rate	120Hz	60Hz
Display features	450nits[typ], 550nits[peak]	Not supported
🤖 Operating System
	HMD XR21	Sonim XP8
System version	Android 13	Android 7.0 Nougat
Firmware update	Android 14	Android 10
User Interface	feature not registered	feature not registered
⚙️ Processor
	HMD XR21	Sonim XP8
Chipset	64bit: Qualcomm Snapdragon 695 (SM6375) (6nm)	64bit: Qualcomm Snapdragon 630 (SDM630) (14nm)
CPU	Octa-core, 2 processors: 2x 2.2GHz Kryo 660 Gold (Dual-core) 6x 1.7GHz Kryo 660 Silver (Hexa-core)	Octa-core, 2 processors: 4x 2.2GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	Qualcomm Adreno 619 (840MHz)	Qualcomm Adreno 508 (650-700Mhz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	HMD XR21	Sonim XP8
RAM memory	6GB LPDDR4X	4GB LPDDR4
Internal storage	128GB (101GB available) UFS 2.2	64GB (45GB available) eMMC 5.1
External storage	Not supported	Until 512GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	HMD XR21	Sonim XP8
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF) + e-SIM	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	2000/1024 Mbps	600/150 Mbps
Network technology	2G, 3G, 4G, 5G	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	CDMA 800/1900, GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1700/1900/2100	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100
Primary 4G network	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	LTE Cat12 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 20, 25, 26, 28, 29, 30, 66) TD-LTE (38, 40, 41)
Primary 5G network	SA/NSA (1, 2, 3, 5, 7, 8, 20, 25, 28, 38, 40, 41, 48, 66, 71, 77, 78, 79)	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, 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	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Secondary 4G network	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	LTE Cat12 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 20, 25, 26, 28, 29, 30, 66) TD-LTE (38, 40, 41)
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	HMD XR21	Sonim XP8
Back camera (main camera)	(dual camera) 64 megapixels 8MP ultrawide f/2.21/4"1.12µm	12 megapixels
Main camera resolution	10120x6328 pixels	4000x3000 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	Dual-LED flash	LED flash
Focal aperture	f/1.8 (aperture)	feature not registered
Focal length	feature not registered	feature not registered
Sensor size	1/2" inches	feature not registered
Pixel size	feature not registered	feature not registered
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Supported	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	1080p@30fps	feature not registered
📸 Front camera
	HMD XR21	Sonim XP8
Front camera (secondary)	16 megapixels	8 megapixels
Front camera resolution	4608x3456 pixels	3264x2448 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	feature not registered	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
	HMD XR21	Sonim XP8
Loudspeaker	Stereo sound with dual speakers	Mono sound with dual speakers
Active noise cancellation	2 microphones	2 microphones or more
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	HMD XR21	Sonim XP8
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C reversible connector
Audio output	3.5mm jack	proprietary audio output
TV output	USB Type-C (reversible)	Not supported
Bluetooth	5.1 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, NavIC	A-GPS, GeoTagging, GLONASS
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	HMD XR21	Sonim XP8
Sensors	Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Barometer Compass Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	HMD XR21	Sonim XP8
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	4800 mAh	4900 mAh
Charger, watts	33W Wired fast charging Reverse charging by cable Quick Charge 3 USB Power Delivery 2.0	18W Wired fast charging Quick Charge 4
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	48 hours (2 days)	30 hours (1.3 days)
Standby	feature not registered	720 hours (30 days)
➕ Other features
	HMD XR21	Sonim XP8
Call control	Voice dialing, Voice recorder, Voice commands	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: Midnight Black	• Colors: Black
☢️ Radiation rate
	HMD XR21	Sonim XP8
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