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Samsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM) vs Samsung Galaxy A51 (SM-A515F/DSM 128GB)

Side by side comparison between Samsung Galaxy A42 5G vs Samsung Galaxy A51 phones, differences, pros, cons with full specifications. What's the better?

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Compare Samsung Galaxy A51 XSamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)08Points
Samsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)
6.6"
AMOLED

720x1600

48
MP

20mp

4GB
RAM

64bit Octa

5000
mAh

(Non removable)

vs
11PointsSamsung Galaxy A51 (SM-A515F/DSM 128GB)Compare Samsung Galaxy A42 5G X
Samsung Galaxy A51 (SM-A515F/DSM 128GB)
6.5"
AMOLED

1080x2400

48
MP

32mp

6GB
RAM

64bit Octa

4000
mAh

(Non removable)

What's the better phone? Samsung Galaxy A51 (SM-A515F/DSM 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!

Galaxy A42 5G (SM-A426B/DS 4GB-RAM)8 Advantages Samsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)vsGalaxy A51 (SM-A515F/DSM 128GB)11 Advantages Samsung Galaxy A51 (SM-A515F/DSM 128GB)
+2.2Ghz 64bit Octa-Core16%
More powerful processor, you can open your applications faster
vs2.3Ghz 64bit Octa-Core
+UFS 2.1Advantage
Fastest write and read storage.
vseMMC 5.1
+6.6"2%
Larger screen
vs6.5"
+f/1.8 (aperture)11%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.0 (aperture)
+5G SA/NSAAdvantage
The 5G SA/NSA network is newer and faster
vs4G+ LTE-A
+(5G SA/NSA) 2000 Mbps2 times
Faster for surfing the internet and download files
vs(4G+ LTE-A) 600 Mbps
+5000 mAh25%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs4000 mAh
+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
vsNot supported
4GB LPDDR4Xvs+6GB LPDDR4X50%
More RAM memory. Typically more responsive and better for multitasking.
193 grams (6.76 ounces)vs+172 grams (6.02 ounces)12%
Lighter
8.6 millimeters (0.34 inches)vs+7.9 millimeters (0.31 inches)9%
Thinner
720x1600 pixelsvs+1080x2400 pixels125%
Higher resolution screen
266 PPIvs+405 PPI52%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
(quad camera) 48MP + 8MP + 5MP + 5MPvs+(quad camera) 48MP + 12MP + 5MP + 5MP6%
Higher resolution main camera
(front) 20MPvs+(front) 32MP61%
Higher resolution secondary camera to take pictures and selfies
(front) Full HD (1920x1080)vs+(front) 4K UHD (3840x2160)3 times
More image quality for recording videos with the secondary camera
Not supportedvs+ANT+Advantage
Sensors help you use the device
2 slots (Dual-SIM)
(hybrid slot/shares the same microSD slot)
vs+2 slots (Dual-SIM)
(dedicated slot)Advantage
More SIM card slots. You can choose more carriers.
Not supportedvs+Gorilla Glass 3Advantage
Protection against scratches on the screen lets you carry your phone with your keys

36 Common items in both devices
128GB (106GB available) / 128GB (107GB available)
Until 1TB microSD, microSDXC
Plastic body, glass front
Super AMOLED
60Hz
16 million
LED flash
+29 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differencesClear highlight
Physical featuresSamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
ModelGalaxy A42 5G (SM-A426B/DS 4GB-RAM)Galaxy A51 (SM-A515F/DSM 128GB)
Other model namesGalaxy A42 5G SM-A426B/DS (128GB + 4GB RAM)Samsung Galaxy A51 SM-A515F/DSM
Country or region available(Europe)(Global, International)
(Europe), (Global, International)
KazakhstanRussia
Kazakhstan, Russia
BrandSamsungSamsung
Release dateSeptember, 2020December, 2019
Depth8.6 millimeters (0.34 inches)7.9 millimeters (0.31 inches)
Size (width x height)75.9 x 164.4 millimeters (2.99 x 6.47 in)73.6 x 158.5 millimeters (2.9 x 6.24 in)
Weight193 grams (6.76 ounces)172 grams (6.02 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsPlastic body, glass frontPlastic body, glass front
Protection against water and othersNot supportedNot supported
System (OS)Samsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Operating systemAndroid 10Android 10
Firmware updatefeature not registeredfeature not registered
HardwareSamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Chipset64bit - Qualcomm Snapdragon 750G SM7225 (8nm)64bit - Samsung Exynos 9 Octa 9611 (10nm)
CPU processorOcta-Core, 2 processors:
2.2Ghz Dual-Core Kryo 570
1.8Ghz Hexa-Core Kryo 570
Octa-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A73
1.7Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerQualcomm Adreno 619ARM Mali-G72 MP3
RAM memory4GB LPDDR4X6GB LPDDR4X
Internal storage128GB (106GB available)
UFS 2.1
128GB (107GB available)
eMMC 5.1
External storageUntil 1TB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)
Until 1TB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Display typeSuper AMOLEDSuper AMOLED
Screen size6.6" inches6.5" inches
Screen-to-body ratio~84.3% (screen-to-body ratio)~87.4% (screen-to-body ratio)
Display resolution720x1600 pixels (20:9)1080x2400 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)266 PPI405 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedGorilla Glass 3
Display features60Hz60Hz
Mobile networksSamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Dual-SIMDual-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 card2 slots (Dual-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload2000/150 Mbps600/150 Mbps
Network technology2G, 3G, 4G, 5G2G, 3G, 4G
Frequency, bandsExpand band detailsCollapse details
GSM Mhz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkUMTS 850/900/1700/1900/2100UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat11 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28)
TD-LTE (38, 40, 41)
VoLTE
LTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
TD-LTE (38, 40, 41)
VoLTE
Primary 5G networkSA/NSA/Sub6 (1, 3, 5, 7, 8, 28, 40, 41, 78)Not supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSAGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGEGPRS, EDGE
CallingSamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder
CameraSamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Back camera (main camera)(quad camera)
48 megapixels
8MP ultrawidef/2.2123º
5MP macrof/2.4
5MP depthf/2.4
(quad camera)
48 megapixels
12MP ultrawidef/2.213mm1.12µm
5MP telephotof/2.440mm
5MP depthf/2.21/5.0"1.12µm
Main camera resolution8000x6000 pixels8000x6000 pixels
Video recording (primary)4K UHD (3840x2160) 30 fps4K UHD (3840x2160) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/2.0 (aperture)
Focal lengthfeature not registered26mm lens
Sensor size1/2" inches1/2" inches
Pixel size0.8µm pixel0.8µm pixel
AutofocusPDAF: phase detection autofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationEIS: Digital stabilization
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedNot supported
HDRHDR photo on both camerasHDR photo on both cameras
2ª cameraSamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Front camera (secondary)20 megapixels32 megapixels
Front camera resolution5184x3840 pixels6528x4896 pixels
Video recording (secondary)Full HD (1920x1080)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)f/2.2 (aperture)
Focal lengthfeature not registered26mm lens
Sensor sizefeature not registered1/2.8" inches
Pixel sizefeature not registered0.8µm pixel
MultimediaSamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
RadioFMFM (RDS)
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivitySamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
USBUSB 2.0 Type-C reversible connectorUSB 2.0 Type-C, USB OTG On-The-Go
TV outputNot supportedNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNANot supportedNot supported
NFCSupportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (under display)
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Hall effect
Face unlock
Fingerprint sensor (under display)
ANT+
Other features- Colors: Prism Dot Black, White, Gray
- One UI 2.5
- Samsung Pay
- WiFi direct, hotspot
- Colors: Prism, Crush Black, White, Blue, Pink
- One UI 2
- Always On Display
- WiFi direct, hotspot
Power supplySamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity5000 mAh4000 mAh
Charger, watts15W Fast battery charging15W Fast battery charging
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered
Radiation rateSamsung Galaxy A42 5G (SM-A426B/DS 4GB-RAM)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)1.154W/kg (head) | 1.334W/kg (body)0.369W/kg (head) | 1.59W/kg (body)
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