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

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

11/25/2020 11:20 AM, updated: 1/18/2023 4:22 AM

Compare Samsung Galaxy M21s X Oppo R7 (USA) 05Points

Specifications Compare Models Pictures

5"
AMOLED

1080x1920

13
MP

8mp

3GB
RAM

Octa-core

2320
mAh

(Non removable)

22Points Samsung Galaxy M21s (SM-F415F/DS) Compare Oppo R7 X

Specifications Compare Models Pictures

6.4"
AMOLED

1080x2340

64
MP

32mp

4GB
RAM

Octa-core

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!

5 Advantages Oppo R7 (USA)	vs	22 Advantages Samsung Galaxy M21s (SM-F415F/DS)
+147 grams (5.15 ounces)30% Lighter	vs	191 grams (6.69 ounces)
+6.3 millimeters (0.25 inches)41% Thinner	vs	8.9 millimeters (0.35 inches)
+441 PPI9% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	403 PPI
+Proximity sensorAdvantage Sensors help you use the device	vs	Virtual proximity sensor
+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.	vs	Not supported
1.5GHz 64bit Octa-core	vs	+2.3GHz 64bit Octa-core (10nm)57% More powerful processor, you can open your applications faster
3GB LPDDR3	vs	+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, microSDXC	vs	+Until 512GB microSD, microSDXC100% More external storage for files using memory cards
AMOLED	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
1080x1920 pixels	vs	+1080x2340 pixels22% Higher resolution screen
5"	vs	+6.4"28% Larger screen
(back) 13MP	vs	+(triple camera) 64MP + 8MP + 5MP5 times Higher resolution main camera
1/3" inches	vs	+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) 8MP	vs	+(front) 32MP3 times Higher resolution secondary camera to take pictures and selfies
Android 4.4.2 KitKat	vs	+Android 12Advantage Android 12 is newer and safer
(4G LTE) 150 Mbps	vs	+(4G LTE-A) 300 Mbps100% Faster for surfing the internet and download files
Not supported	vs	+Face unlockAdvantage Sensors help you use the device
Not supported	vs	+Fingerprint sensor (rear-mounted)Advantage Sensors help you use the device
Not supported	vs	+GyroscopeAdvantage Sensors help you use the device
2320 mAh	vs	+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 You can have more mobile carriers/operators on the same device.
Not supported	vs	+FM (RDS)Advantage The radio lets you listen to your songs and sports in general
802.11 b/g/n [wifi4]	vs	+802.11 a/b/g/n/ac [wifi5]Advantage WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster
4.0 + A2DP	vs	+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster
MicroUSB 2.0	vs	+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.

20 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)

+13 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
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
Change model
Model	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
Other model names	Oppo R7f USA version, Oppo R7 LTE, Oppo R7 Dual-Sim	Galaxy M21s SM-F415F/Dual-Sim (4GB RAM)
Country or region available	USA	(Latin America), Brazil
Brand	Oppo	Samsung
Release date	5/20/2015	11/6/2020
Depth	6.3 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)
Weight	147 grams (5.15 ounces)	191 grams (6.69 ounces)
Build, materials	feature not registered	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
Display type	AMOLED	Super AMOLED
Screen size	5" inches	6.4" inches
Screen-to-body ratio	~67.9% (screen-to-body ratio)	~84.1% (screen-to-body ratio)
Display resolution	1080x1920 pixels	1080x2340 pixels (19.5:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	441 PPI	403 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 3	Gorilla Glass 3
Refresh rate	feature not registered	60Hz
Display features	feature not registered	420nits[peak]
🤖 Operating System
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
System version	Android 4.4.2 KitKat	Android 10
Firmware update	feature not registered	Android 12
User Interface	feature not registered	One UI 2.5 / 3.1 / 4.1
⚙️ Processor
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
Chipset	64bit: Qualcomm Snapdragon 615 MSM8939 (28nm)	64bit: Samsung Exynos 9611 (10nm)
CPU	Octa-core, 2 processors: 4x 1.5GHz ARM Cortex-A53 (Quad-core) 4x 1GHz ARM Cortex-A53 (Quad-core)	Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	Qualcomm Adreno 405	ARM Mali-G72 MP3 (850MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
RAM memory	3GB LPDDR3	4GB LPDDR4X
Internal storage	16GB (12GB available)	64GB (49GB available) UFS 2.1
External storage	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Until 512GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
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) micro-SIM (3FF) and nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	150/50 Mbps	300/50 Mbps
Network technology	2G, 3G, 4G	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	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE 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 network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE	GPRS, EDGE, 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	Not supported	LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
Back camera (main camera)	13 megapixels	(triple camera) 64 megapixels 8MP ultrawide f/2.2123°12mm1/4"1.12µm 5MP depth f/2.2
Main camera resolution	4128x3096 pixels	10120x6328 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/2.2 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	1/3" inches	1/1.72" inches
Pixel size	feature not registered	0.8µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital 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	Supported
HDR	HDR photo/video and HDR photo on front camera	HDR photo on both cameras
Camera extras	feature not registered	4K@30fps 1080p@30fps
📸 Front camera
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
Front camera (secondary)	8 megapixels	32 megapixels
Front camera resolution	3264x2448 pixels	6528x4896 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.4 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	feature not registered	1/2.8" inches
Pixel size	feature not registered	0.8µm pixel
🔉 Sound and multimedia
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
Loudspeaker	Supported	Mono sound (not stereo)
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	Not supported	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
USB	MicroUSB 2.0	USB 2.0 Type-C reversible connector
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	4.0 + A2DP	5.0 + A2DP/LE
WiFi	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Not supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
Sensors	Accelerometer Ambient light sensor Compass Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Virtual proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	2320 mAh	6000 mAh
Charger, watts	Wired charging	15W Wired fast charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	feature not registered	48 hours (2 days)
Standby	feature not registered	feature not registered
➕ Other features
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
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: Golden, Silver • USB OTG On-The-Go • Color OS 2.1 UI • Samsung 3M2 sensor camera • Fast battery charging: 75% in 30min	• Colors: Black, Blue
☢️ Radiation rate
	Oppo R7 (USA)	Galaxy M21s (SM-F415F/DS)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.383W/kg (head)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered