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Oppo R7 (USA) vs Samsung Galaxy M21s (SM-F415F/DS)

Side by side comparison between Oppo R7 vs Samsung Galaxy M21s phones, differences, pros, cons with full specifications. What's the better?

,
Oppo R7 (USA)
5"
AMOLED

1080x1920

13
MP

8mp

3GB
RAM

64bit Octa

2320
mAh

(Non removable)

vs
22PointsSamsung Galaxy M21s (SM-F415F/DS)Compare Oppo R7 X
Samsung Galaxy M21s (SM-F415F/DS)
6.4"
AMOLED

1080x2340

64
MP

32mp

4GB
RAM

64bit Octa

6000
mAh

(Non removable)

What's the better phone? Samsung Galaxy M21s (SM-F415F/DS)

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!

R7 (USA)7 Advantages Oppo R7 (USA)vsGalaxy M21s (SM-F415F/DS)22 Advantages Samsung Galaxy M21s (SM-F415F/DS)
+147 grams (5.15 ounces)30%
Lighter
vs191 grams (6.69 ounces)
+6.3 millimeters (0.25 inches)41%
Thinner
vs8.9 millimeters (0.35 inches)
+441 PPI9%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs403 PPI
+BSI sensorAdvantage
The BSI sensor allows the entry of more light generating photos with more detail and brightness
vsNot supported
+Proximity sensorAdvantage
Sensors help you use the device
vsNot supported
+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
vsNot supported
+Gorilla Glass 3Advantage
Protection against scratches on the screen lets you carry your phone with your keys
vsNot supported
1.5Ghz 64bit Octa-Corevs+2.3Ghz 64bit Octa-Core68%
More powerful processor, you can open your applications faster
3GB LPDDR3vs+4GB LPDDR4X33%
More RAM memory. Typically more responsive and better for multitasking.
16GB (12GB available)vs+64GB (49GB available)3 times
More internal storage for applications and files
Until 256GB microSD, microSDXCvs+Until 512GB microSD, microSDXC100%
More external storage for files using memory cards
AMOLEDvs+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
1080x1920 pixelsvs+1080x2340 pixels22%
Higher resolution screen
5"vs+6.4"28%
Larger screen
(back) 13MPvs+(triple camera) 64MP + 8MP + 5MP5 times
Higher resolution main camera
1/3" inchesvs+1/1.72" inches74%
The larger sensor camera lets you take photos with better depth.
f/2.2 (aperture)vs+f/1.8 (aperture)22%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 8MPvs+(front) 32MP3 times
Higher resolution secondary camera to take pictures and selfies
Android 4.4.2 KitKatvs+Android 10Advantage
Android 10 is newer and safer
(4G LTE) 150 Mbpsvs+(4G+ LTE-A) 300 Mbps100%
Faster for surfing the internet and download files
Not supportedvs+GyroscopeAdvantage
Sensors help you use the device
Not supportedvs+Fingerprint sensor (rear-mounted)Advantage
Sensors help you use the device
Not supportedvs+Face unlockAdvantage
Sensors help you use the device
2320 mAhvs+6000 mAh159%
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
More SIM card slots. You can choose more carriers.
Not supportedvs+FM (RDS)Advantage
The radio lets you listen to your songs and sports in general
802.11 b/g/n (2.4Ghz)vs+802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMOAdvantage
WiFi 802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO is newer and faster
4.0 + A2DPvs+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster
MicroUSB 2.0vs+Type-CAdvantage
Reversible connector, you can stick in a USB-C cable any which way; either side is up.

23 Common items in both devices
16 million
LED flash
Only digital zoom
PDAF: phase detection autofocus
EIS: Digital stabilization
HDR photo/video and HDR photo on front camera / HDR photo on both cameras
4K UHD (3840x2160)
+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 differencesClear highlight
Physical featuresOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
ModelR7 (USA)Galaxy M21s (SM-F415F/DS)
Other model namesOppo R7f USA version, Oppo R7 LTE, Oppo R7 Dual-SimGalaxy M21s SM-F415F/Dual-Sim (4GB RAM)
Country or region availableUSA
USA
(Latin America)Brazil
(Latin America), Brazil
BrandOppoSamsung
Release dateMay, 2015November, 2020
Depth6.3 millimeters (0.25 inches)8.9 millimeters (0.35 inches)
Size (width x height)71 x 143 millimeters (2.8 x 5.63 in)75.1 x 159.2 millimeters (2.96 x 6.27 in)
Weight147 grams (5.15 ounces)191 grams (6.69 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsfeature not registeredPlastic body, glass front
Protection against water and othersNot supportedNot supported
System (OS)Oppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
Operating systemAndroid 4.4.2 KitKatAndroid 10
Firmware updatefeature not registeredfeature not registered
HardwareOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
Chipset64bit - Qualcomm Snapdragon 615 MSM8939 (28nm)64bit - Samsung Exynos 9 Octa 9611 (10nm)
CPU processorOcta-Core, 2 processors:
1.5Ghz Quad-Core ARM Cortex-A53
1Ghz Quad-Core ARM Cortex-A53
Octa-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A73
1.7Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerQualcomm Adreno 405ARM Mali-G72 MP3
RAM memory3GB LPDDR34GB LPDDR4X
Internal storage16GB (12GB available)64GB (49GB available)
eMMC 5.1
External storageUntil 256GB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)
Until 512GB microSD, microSDXC
(dedicated slot)
DisplayOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
Display typeAMOLEDSuper AMOLED
Screen size5" inches6.4" inches
Screen-to-body ratio~67.9% (screen-to-body ratio)~84.1% (screen-to-body ratio)
Display resolution1080x1920 pixels1080x2340 pixels (19.5:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)441 PPI403 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 3Not supported
Display featuresfeature not registered60Hz, 420 nits
Mobile networksOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
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)
micro-SIM (3FF) and nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload150/50 Mbps300/50 Mbps
Network technology2G, 3G, 4G2G, 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 Cat4 700/800/1700/1800/2100/2600 (Bands 1,3,4,7,17,20)LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
TD-LTE (38, 40, 41)
VoLTE
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTEGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkUMTS 850/900/1700/1900/2100Not supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+GPRS, EDGE
CallingOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
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, Voice commands
CameraOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
Back camera (main camera)13 megapixels(triple camera)
64 megapixels
8MP ultrawidef/2.2123º12mm1/4.0"1.12µm
5MP depthf/2.2
Main camera resolution4128x3096 pixels10120x6328 pixels
Video recording (primary)4K UHD (3840x2160) 30 fps4K UHD (3840x2160) 30 fps
FlashLED flashLED flash
Focal aperturef/2.2 (aperture)f/1.8 (aperture)
Focal lengthfeature not registered26mm lens
Sensor size1/3" inches1/1.72" inches
Pixel sizefeature not registered0.8µm 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 sensorSupportedNot supported
HDRHDR photo/video and HDR photo on front cameraHDR photo on both cameras
2ª cameraOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
Front camera (secondary)8 megapixels32 megapixels
Front camera resolution3264x2448 pixels6528x4896 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.4 (aperture)f/2.0 (aperture)
Focal lengthfeature not registered26mm lens
Sensor sizefeature not registered1/2.8" inches
Pixel sizefeature not registered0.8µm pixel
MultimediaOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
RadioNot supportedFM (RDS)
TVNot supportedNot supported
Video formatsMP4, H.264, H.263MP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivityOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
USBMicroUSB 2.0USB 2.0 Type-C reversible connector
TV outputNot supportedNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth4.0 + A2DP5.0 + A2DP/LE
WiFi802.11 b/g/n (2.4Ghz)802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNASupportedNot supported
NFCNot supportedNot supported
GPSA-GPS, GeoTagging, GLONASSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedNot supported
Other functionsOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Accelerometer
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Other features- Colors: Golden, Silver
- USB OTG On-The-Go
- Color OS 2.1 UI
- Samsung 3M2 sensor camera
- Fast battery charging: 75% in 30min
- WiFi direct, hotspot
- Colors: Black, Blue
- One UI 2.5
- Stereo sound not supported
- DeX not supported
- WiFi direct, hotspot
Power supplyOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity2320 mAh6000 mAh
Charger, watts Standard charging15W Fast battery charging
Talk time autonomyfeature not registered2880 minutes | 48 hours | 2 days
Standbyfeature not registeredfeature not registered
Radiation rateOppo R7 (USA)Samsung Galaxy M21s (SM-F415F/DS)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registered0.383W/kg (head)
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
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