Samsung Galaxy M55s (SM-M558B/DS 128GB) vs Umidigi A11 Pro Max (128GB/4GB)

Share page: Facebook Twitter WhatsApp Share page:

Side by side comparison between Samsung Galaxy M55s vs Umidigi A11 Pro Max phones, differences, pros, cons and full specifications. What's the better?

5/20/2025 7:22 AM, updated: 5/20/2025 7:36 AM

Compare Umidigi A11 Pro Max X Samsung Galaxy M55s (SM-M558B/DS 128GB) 22Points

Specifications Compare Models Pictures

6.7"
AMOLED

1080x2400

50
MP

50mp

8GB
RAM

Octa-core

5000
mAh

(Non removable)

10Points Umidigi A11 Pro Max (128GB/4GB) Compare Samsung Galaxy M55s X

Specifications Compare Models Pictures

6.8"
IPS

1080x2460

48
MP

24mp

4GB
RAM

Octa-core

5150
mAh

(Non removable)

What's the better phone? Samsung Galaxy M55s (SM-M558B/DS 128GB)

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!

22 Advantages Samsung Galaxy M55s (SM-M558B/DS 128GB)	vs	10 Advantages Umidigi A11 Pro Max (128GB/4GB)
+2.4GHz 64bit Octa-core (4nm)31% More powerful processor, you can open your applications faster	vs	2GHz 64bit Octa-core (12nm)
+8GB LPDDR4X100% More RAM memory. Typically more responsive and better for multitasking.	vs	4GB LPDDR4X
+UFS 2.2Advantage Fastest write and read storage.	vs	eMMC 5.1
+Until 1TB microSD, microSDXC3 times More external storage for files using memory cards	vs	Until 256GB microSD, microSDXC
+180 grams (6.3 ounces)25% Lighter	vs	225 grams (7.88 ounces)
+7.8 millimeters (0.31 inches)10% Thinner	vs	8.6 millimeters (0.34 inches)
+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid	vs	TFT IPS LCD
+120Hz100% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.	vs	60Hz
+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
+1/1.56" inches28% The larger sensor camera lets you take photos with better depth.	vs	1/2" inches
+(front) 50MP110% Higher resolution secondary camera to take pictures and selfies	vs	(front) 24MP
+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera	vs	Full HD (1920x1080)
+(front) 4K UHD (3840x2160)3 times More image quality for recording videos with the secondary camera	vs	(front) Full HD (1920x1080)
+Android 15Advantage Android 15 is newer and safer	vs	Android 11
+5G Sub6Advantage The 5G Sub6 network is newer and faster	vs	4G LTE-A
+(5G Sub6) 3000 Mbps4 times Faster for surfing the internet and download files	vs	(4G LTE-A) 600 Mbps
+45W4 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.	vs	10W
+Stereo soundAdvantage Better sound quality for listening to music or clearer hands-free calls	vs	Mono sound (not stereo)
+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]
+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster	vs	5.0 + A2DP/LE
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
Plastic body, glass front	vs	+Aluminum body, glass frontAdvantage More resistant material
1080x2400 pixels	vs	+1080x2460 pixels2% Higher resolution screen
393 PPI	vs	+395 PPI1% Crisper display of text, images and videos because it has more pixels per inch (ppi)
6.7"	vs	+6.8"1% Larger screen
(triple camera) 50MP + 8MP + 2MP	vs	+(triple camera) 48MP + 16MP + 2MP10% Higher resolution main camera
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
5000 mAh	vs	+5150 mAh3% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)	vs	+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.
Type-C reversible connector	vs	+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores
Not supported	vs	+FMAdvantage The radio lets you listen to your songs and sports in general

23 Common items in both devices

128GB (105GB available) / 128GB (108GB available)

16 million

Only digital zoom

PDAF: phase detection autofocus

HDR photo on both cameras

f/1.8 (aperture)

Capacitive

+16 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
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
Change model		Choose the model
Model	Galaxy M55s (SM-M558B/DS 128GB)	A11 Pro Max (128GB/4GB)
Other model names	Galaxy M55s 5G SM-M558B/Dual-SIM	UMIDIGI A11 Pro Max (4GB RAM)
Country or region available	Bangladesh, India	(Global, International)
Brand	Samsung	Umidigi
Release date	9/26/2024, Announced: 9/24/2024	8/1/2021
Depth	7.8 millimeters (0.31 inches)	8.6 millimeters (0.34 inches)
Size (width x height)	76.5 x 163.9 millimeters (3.01 x 6.45 in)	75.6 x 167.8 millimeters (2.98 x 6.61 in)
Weight	180 grams (6.3 ounces)	225 grams (7.88 ounces)
Build, materials	Plastic body, glass front	Aluminum body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
Display type	Super AMOLED	TFT IPS LCD
Screen size	6.7" inches	6.8" inches
Screen-to-body ratio	~86.4% (screen-to-body ratio)	~86.6% (screen-to-body ratio)
Display resolution	1080x2400 pixels (20:9)	1080x2460 pixels (20.5:9)
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch
Pixel density (dot pitch)	393 PPI	395 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Not supported
Refresh rate	120Hz	60Hz
Display features	Always-On Display	Not supported
🤖 Operating System
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
System version	Android 14	Android 11
Firmware update	Android 15	feature not registered
User Interface	One UI 6.1 / 7.0	feature not registered
⚙️ Processor
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
Chipset	64bit: Qualcomm Snapdragon 7 Gen 1 (SM7450-AB) (4nm)	64bit: MediaTek Helio G80 (MT6769V/CU) (12nm)
CPU	Octa-core, 3 processors: 1x 2.4GHz ARM Cortex-A710 (Single-core) 3x 2.36GHz ARM Cortex-A710 (Triple-core) 4x 1.8GHz ARM Cortex-A510 (Quad-core)	Octa-core, 2 processors: 2x 2GHz ARM Cortex-A75 (Dual-core) 6x 1.8GHz ARM Cortex-A55 (Hexa-core)
GPU graphical controller	Qualcomm Adreno 644 (443MHz)	ARM Mali-G52 MC2 (950MHz)
Performance (benchmark)	AnTuTu: 582102 (v10)	AnTuTu: 194559 (v9)
💽 Memory and storage
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
RAM memory	8GB LPDDR4X	4GB LPDDR4X
Internal storage	128GB (105GB available) UFS 2.2	128GB (108GB available) eMMC 5.1
External storage	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Until 256GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
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 (dedicated slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	3000/1024 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, GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1700/1900/2100	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE	LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66) TD-LTE (34, 38, 39, 40, 41) VoLTE
Primary 5G network	SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78)	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	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
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 Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE	LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66) TD-LTE (34, 38, 39, 40, 41) VoLTE
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
Back camera (main camera)	(triple camera) 50 megapixels 8MP ultrawide f/2.2123° 2MP macro f/2.4	(triple camera) 48 megapixels 16MP ultrawide f/2.2120° 2MP macro f/2.4
Main camera resolution	8160x6120 pixels	8000x6000 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	Full HD (1920x1080) 30 fps
Flash	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	1/1.56" inches	1/2" inches
Pixel size	1µm pixel	0.8µm pixel
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	4K@30fps 1080p@30/60fps 720p@240fps (slow motion)	Sony IMX582 sensor Infrared temperature sensor
📸 Front camera
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
Front camera (secondary)	50 megapixels	24 megapixels
Front camera resolution	8160x6120 pixels	5632x4224 pixels
Video recording (secondary)	4K UHD (3840x2160)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.4 (aperture)	f/1.8 (aperture)
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
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
Loudspeaker	Stereo sound	Mono sound (not stereo)
Active noise cancellation	2 microphones	2 microphones or more
Radio	Not supported	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
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	Type-C reversible connector	3.5mm jack
TV output	USB Type-C (reversible)	USB Type-C (reversible)
Bluetooth	5.2 + 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) WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS	A-GPS, GeoTagging, GLONASS, GALILEO
NFC	Supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
Battery type	Li-Ion: lithium-ion (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	5000 mAh	5150 mAh
Charger, watts	45W Wired fast charging	10W Wired charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
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: Thunder Black, Coral Green	• Colors: Frost Grey, Mist Blue
☢️ Radiation rate
	Galaxy M55s (SM-M558B/DS 128GB)	Umidigi A11 Pro Max (128GB/4GB)
SAR 1.6W/kg (USA, Mexico, etc.)	0.93W/kg (head)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered