Samsung Galaxy M31 (SM-M315F/DS 128GB/6GB) vs Samsung Galaxy Z Fold 7 (SM-F966B/DS 512GB)

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Side by side comparison between Samsung Galaxy M31 vs Samsung Galaxy Z Fold 7 phones, differences, pros, cons and full specifications. What's the better?

9/6/2025 4:54 PM, updated: 9/13/2025 8:28 PM

Compare Samsung Galaxy Z Fold 7 X Samsung Galaxy M31 (SM-M315F/DS 128GB/6GB) 08Points

Specifications Compare Models Pictures

6.4"
AMOLED

1080x2340

64
MP

32mp

6GB
RAM

Octa-core

6000
mAh

(Non removable)

32Points Samsung Galaxy Z Fold 7 (SM-F966B/DS 512GB) Compare Samsung Galaxy M31 X

Specifications Compare Models Pictures

8"
AMOLED

1968x2184

200
MP

10mp

12GB
RAM

Octa-core

4400
mAh

(Non removable)

What's the better phone? Samsung Galaxy Z Fold 7 (SM-F966B/DS 512GB)

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!

8 Advantages Samsung Galaxy M31 (SM-M315F/DS 128GB/6GB)	vs	32 Advantages Samsung Galaxy Z Fold 7 (SM-F966B/DS 512GB)
+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards	vs	Not supported
+191 grams (6.69 ounces)13% Lighter	vs	215 grams (7.53 ounces)
+403 PPI10% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	367 PPI
+(front) 32MP2 times Higher resolution secondary camera to take pictures and selfies	vs	(front) 10MP
+6000 mAh36% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	4400 mAh
+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores	vs	Type-C reversible connector
+FM (RDS)Advantage The radio lets you listen to your songs and sports in general	vs	Not supported
+Gorilla Glass 3Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
2.3GHz 64bit Octa-core (10nm)	vs	+4.47GHz 64bit Octa-core (3nm)146% More powerful processor, you can open your applications faster
6GB LPDDR4X	vs	+12GB LPDDR5X100% More RAM memory. Typically more responsive and better for multitasking.
128GB (108GB available)	vs	+512GB (476GB available)3 times More internal storage for applications and files
UFS 2.1	vs	+UFS 4.0Advantage Fastest write and read storage.
8.9 millimeters (0.35 inches)	vs	+4.2 millimeters (0.17 inches)112% Thinner
Plastic body, glass front	vs	+Aluminum frame, flexible plastic screen, glass backAdvantage More resistant material
Not supported	vs	+HDR10+Advantage The HDR10+ display provides vibrant colors and more details
60Hz	vs	+120Hz100% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
1080x2340 pixels	vs	+1968x2184 pixels70% Higher resolution screen
6.4"	vs	+8"25% Larger screen
(quad camera) 64MP + 8MP + 5MP + 5MP	vs	+(triple camera) 200MP + 10MP + 12MP171% Higher resolution main camera
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
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
1/1.72" inches	vs	+1/1.3" inches32% The larger sensor camera lets you take photos with better depth.
f/1.8 (aperture)	vs	+f/1.7 (aperture)6% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
4K UHD (3840x2160)	vs	+8K UHD (7680x4320)3 times More image quality for recording videos with the primary camera
Android 11	vs	+Android 16Advantage Android 16 is newer and safer
4G LTE-A	vs	+5G Sub6Advantage The 5G Sub6 network is newer and faster
(4G LTE-A) 600 Mbps	vs	+(5G Sub6) 5000 Mbps7 times Faster for surfing the internet and download files
Not supported	vs	+BarometerAdvantage Sensors help you use the device
Not supported	vs	+Proximity sensorAdvantage Sensors help you use the device
Not supported	vs	+UWB (Ultra Wideband)Advantage Sensors help you use the device
15W	vs	+25W67% 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	+Qi Wireless charging (Qi/WPC)Advantage Wireless charging is another way to charge the battery.
2 slots (Dual-SIM) (dedicated slot)	vs	+2 slots (Dual-SIM) + e-SIM (Eletronic)Advantage You can have more mobile carriers/operators on the same device.
802.11 a/b/g/n/ac [wifi5]	vs	+802.11 a/b/g/n/ac/ax/be [wifi7/6E/6]Advantage WiFi 802.11 a/b/g/n/ac/ax/be [wifi7/6E/6] is newer and faster
Not supported	vs	+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
5.0 + A2DP/LE	vs	+5.4 + A2DP/LEAdvantage Bluetooth 5.4 + A2DP/LE is newer and faster
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
USB 2.0 Type-C, USB OTG On-The-Go	vs	+USB 3.2 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.
Not supported	vs	+IP48 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

21 Common items in both devices

Super AMOLED / LTPO AMOLED

16 million

LED flash

PDAF: phase detection autofocus

HDR photo on both cameras / HDR photo/video and HDR photo on front camera

(front) 4K UHD (3840x2160)

Capacitive

+14 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 M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
Change model		Choose the model
Model	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
Other model names	Galaxy M315F/Dual-Sim (128GB + 6GB RAM)	Galaxy Z Fold7 SM-F966B/Dual-SIM
Country or region available	(Latin America), (Global, International), Philippines, India, Indonesia, Malaysia	(Global, International)
Brand	Samsung	Samsung
Release date	3/5/2020, Announced: 2/25/2020	7/25/2025, Announced: 7/9/2025
Depth	8.9 millimeters (0.35 inches)	4.2 millimeters (0.17 inches)
Size (width x height)	75.1 x 159.2 millimeters (2.96 x 6.27 in)	143.2 x 1584 millimeters (5.64 x 62.36 in)
Weight	191 grams (6.69 ounces)	215 grams (7.53 ounces)
Build, materials	Plastic body, glass front	Aluminum frame, flexible plastic screen, glass back Back: Gorilla Glass Victus 2 Folded: 8.9 mm x 72.8 x 158.4
Protection against water and others	Not supported	IP48 certified: dust and water resistant (dust > 1mm; immersible up to 1.5m for 30 min)
📲 Display
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
Display type	Super AMOLED	LTPO AMOLED
Screen size	6.4" inches	8" inches
Screen-to-body ratio	~84.1% (screen-to-body ratio)	~9.1% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1968x2184 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	403 PPI	367 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 3	Not supported
Refresh rate	60Hz	120Hz
Display features	420nits[peak]	2600nits[peak] HDR10+ Always-On Display Extra display: Dynamic 2X LTPO AMOLED 6.5" (1080x2520), 120Hz, Gorilla Glass Victus 2
🤖 Operating System
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
System version	Android 10	Android 16
Firmware update	Android 11	feature not registered
User Interface	feature not registered	One UI 8
⚙️ Processor
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
Chipset	64bit: Samsung Exynos 9611 (10nm)	64bit: Qualcomm Snapdragon 8 Elite (SM8750-AC) (3nm)
CPU	Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core)	Octa-core, 2 processors: 2x 4.47GHz Oryon V2 Phoenix L (Dual-core) 6x 3.53GHz Oryon V2 Phoenix M (Hexa-core)
GPU graphical controller	ARM Mali-G72 MP3 (850MHz)	Qualcomm Adreno 830 (1200MHz)
Performance (benchmark)	feature not registered	AnTuTu: 1995920 (v10) Geekbench: 9152 (v6)
💽 Memory and storage
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
RAM memory	6GB LPDDR4X	12GB LPDDR5X
Internal storage	128GB (108GB available) UFS 2.1	512GB (476GB available) UFS 4.0
External storage	Until 1TB microSD, microSDXC (dedicated slot)	Not supported
📶 Mobile networks
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated 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	600/150 Mbps	5000/1024 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	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE	LTE Cat (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE
Primary 5G network	Not supported	SA/NSA/Sub6 (1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 77, 78)
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6
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 Cat (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE
Secondary data network	GPRS, EDGE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6
📷 Camera
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
Back camera (main camera)	(quad camera) 64 megapixels 8MP ultrawide f/2.212mm1/4.0"1.12µm 5MP macro f/2.425mm1/5.0"1.12µm 5MP depth f/2.2	(triple camera) 200 megapixels 10MP telephoto f/2.467mm1.0µmPDAFOIS3x-optical-zoom 12MP ultrawide f/2.2120°1.4µmPDAF
Main camera resolution	10120x6328 pixels	20000x10000 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	8K UHD (7680x4320) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.7 (aperture)
Focal length	26mm (lens)	24mm (lens)
Sensor size	1/1.72" inches	1/1.3" inches
Pixel size	0.8µm pixel	0.6µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase 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	Supported
HDR	HDR photo on both cameras	HDR photo/video and HDR photo on front camera
Camera extras	feature not registered	8K@30fps 4K@60fps 1080p@60/120/240fps 720p@960fps 10-bit HDR HDR10+ Extra cover camera: 10MP wide (f/2.2 24mm 1.12µm)
📸 Front camera
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
Front camera (secondary)	32 megapixels	10 megapixels
Front camera resolution	6528x4896 pixels	3872x2592 pixels
Video recording (secondary)	4K UHD (3840x2160)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.2 (aperture)
Focal length	26mm (lens)	18mm (lens)
Sensor size	1/2.8" inches	feature not registered
Pixel size	0.8µm pixel	1.12µm pixel
🔉 Sound and multimedia
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
Loudspeaker	Supported	Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG
Active noise cancellation	2 microphones or more	3 microphones
Radio	FM (RDS)	Not supported
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 M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 3.2 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	Type-C reversible connector
TV output	Not supported	USB Type-C (reversible)
Bluetooth	5.0 + A2DP/LE	5.4 + 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/be [wifi7/6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, QZSS
NFC	Not supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope	Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Proximity sensor UWB (Ultra Wideband)
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	6000 mAh	4400 mAh
Charger, watts	15W Wired fast charging	25W Wired fast charging
Inductive / wireless charging	Not supported	15W Qi Wireless charging (Qi/WPC) 4.5W Reverse wireless charging
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
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: Ocean Blue, Space Black, Red • One UI 2.0, 3.1	• Colors: Blue Shadow, Silver Shadow, Jet Black, Mint • Samsung DeX
☢️ Radiation rate
	Galaxy M31 (SM-M315F/DS 128GB/6GB)	Galaxy Z Fold 7 (SM-F966B/DS 512GB)
SAR 1.6W/kg (USA, Mexico, etc.)	0.52W/kg (head), 0.69W/kg (body)	1.21W/kg (head), 1.26W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	0.482W/kg (head), 1.127W/kg (body)	1.418W/kg (head), 1.242W/kg (body)