Motorola Charm (MB502) vs Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)

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Side by side comparison between Motorola Charm vs Samsung Galaxy J7 Duo phones, differences, pros, cons and full specifications. What's the better?

10/28/2018 11:19 PM, updated: 6/19/2025 9:53 AM

Compare Samsung Galaxy J7 Duo X Motorola Charm (MB502) 03Points

Specifications Compare Models Pictures

2.8"
TFT

320x240

3.1
MP

512MB
RAM

Single-core

1170
mAh

(Removable)

29Points Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) Compare Motorola Charm X

Specifications Compare Models Pictures

5.5"
AMOLED

720x1280

13
MP

8mp

3GB
RAM

Octa-core

3000
mAh

(Removable)

What's the better phone? Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)

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!

3 Advantages Motorola Charm (MB502)	vs	29 Advantages Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
+110 grams (3.85 ounces)58% Lighter	vs	174 grams (6.09 ounces)
+Ambient light sensorAdvantage Sensors help you use the device	vs	Not supported
+CompassAdvantage Sensors help you use the device	vs	Not supported
600MHz 32bit Single-core (65nm)	vs	+2.2GHz 64bit Octa-core (14nm)6 times More powerful processor, you can open your applications faster
512MB LPDDR	vs	+3GB LPDDR45 times More RAM memory. Typically more responsive and better for multitasking.
512MB (150MB available)	vs	+32GB (21GB available)142 times More internal storage for applications and files
Until 32GB microSD, microSDHC	vs	+Until 256GB microSD, microSDXC7 times More external storage for files using memory cards
11.4 millimeters (0.45 inches)	vs	+8.2 millimeters (0.32 inches)39% Thinner
TFT LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
260 thousand	vs	+16 million61 times More colors on the screen is better quality images and videos
320x240 pixels	vs	+720x1280 pixels11 times Higher resolution screen
143 PPI	vs	+267 PPI87% Crisper display of text, images and videos because it has more pixels per inch (ppi)
2.8"	vs	+5.5"96% Larger screen
(back) 3.1MP	vs	+(dual camera) 13MP + 5MP5 times Higher resolution main camera
Not supported	vs	+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light
Not supported	vs	+AutofocusAdvantage Best autofocus type for taking pictures
Not supported	vs	+EIS: Digital stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
Not supported	vs	+HDR photo only main cameraAdvantage The HDR technology produced photos with more detail in dark areas
Not supported	vs	+(front) 8MPAdvantage A front-camera is best for taking selfies
CIF (352x288)	vs	+Full HD (1920x1080)19 times More image quality for recording videos with the primary camera
Android 2.1 Eclair	vs	+Android 10Advantage Android 10 is newer and safer
3G HSUPA	vs	+4G LTEAdvantage The 4G LTE network is newer and faster
(3G HSUPA) 3.6 Mbps	vs	+(4G LTE) 150 Mbps41 times Faster for surfing the internet and download files
Not supported	vs	+ANT+Advantage Sensors help you use the device
Not supported	vs	+Face unlock 2DAdvantage Sensors help you use the device
Not supported	vs	+Fingerprint sensor (front-mounted)Advantage Sensors help you use the device
1170 mAh	vs	+3000 mAh156% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
Not supported	vs	+Video callingAdvantage The video calling allows to make calls with voice and video
1 slot (Single-SIM) (dedicated slot)	vs	+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.
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
2.0 + A2DP	vs	+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster
HTML, XHTML, Flash player	vs	+HTML, XHTML, HTML5Advantage Better sites viewing on the internet

15 Common items in both devices

Plastic body / Plastic body, glass front

Only digital zoom

Capacitive

Multitouch

Accelerometer

Proximity sensor

Li-Ion: lithium-ion (Removable)

+8 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
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Change model		Choose the model
Model	Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Other model names	T-Mobile Motorola CHARM MB502, Motorola CHARM ME502	Galaxy J7 Duo (32GB + 3GB RAM) Dual-Sim, Samsung J720
Country or region available	(Global, International)	(Europe), (Global, International), Singapore, Thailand, Vietnam
Brand	Motorola	Samsung
Release date	8/5/2010	4/1/2018
Depth	11.4 millimeters (0.45 inches)	8.2 millimeters (0.32 inches)
Size (width x height)	67.2 x 98.4 millimeters (2.65 x 3.87 in)	77.2 x 153.5 millimeters (3.04 x 6.04 in)
Weight	110 grams (3.85 ounces)	174 grams (6.09 ounces)
Build, materials	Plastic body	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Display type	TFT LCD	Super AMOLED
Screen size	2.8" inches	5.5" inches
Screen-to-body ratio	~36.7% (screen-to-body ratio)	~70.4% (screen-to-body ratio)
Display resolution	320x240 pixels	720x1280 pixels (16:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	143 PPI	267 PPI
Colors	260 thousand	16 million
Scratch-resistant glass	Gorilla Glass	Gorilla Glass
Refresh rate	feature not registered	60Hz
Display features	Not supported	Not supported
🤖 Operating System
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
System version	Android 2.1 Eclair	Android 8.0 Oreo
Firmware update	feature not registered	Android 10
User Interface	MOTOBLUR UI 1.5	One UI 2.0
⚙️ Processor
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Chipset	32bit: Texas Instruments OMAP 3410 (65nm)	64bit: Samsung Exynos 7885 (14nm)
CPU	Single-core, 1 processor: 1x 600MHz ARM Cortex-A8 (Single-core)	Octa-core, 2 processors: 2x 2.2GHz ARM Cortex-A73 (Dual-core) 6x 1.6GHz ARM Cortex-A53 (Hexa-core)
GPU graphical controller	PowerVR SGX530 MP1	ARM Mali-G71 MP2
Performance (benchmark)	feature not registered	AnTuTu: 98104 (v7)
💽 Memory and storage
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
RAM memory	512MB LPDDR	3GB LPDDR4
Internal storage	512MB (150MB available)	32GB (21GB available) eMMC 5.1
External storage	Until 32GB microSD, microSDHC (dedicated slot)	Until 256GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	1 slot (Single-SIM) Standard mini-SIM (2FF)	2 slots (Dual-SIM) micro-SIM (3FF)
Maximum Download / Upload	3.6/2 Mbps	150/50 Mbps
Network technology	2G	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	Not supported	UMTS 850/900/1900/2100
Primary 4G network	Not supported	LTE Cat4 (1, 3, 5, 7, 8, 20) TD-LTE (38, 40, 41)
Primary 5G network	Not supported	Not supported
Primary data network	CSD, GPRS, EDGE, UMTS, HSDPA, HSUPA	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
Secondary 2G network	Not supported	GSM 850/900/1800/1900
Secondary 3G network	Not supported	UMTS 850/900/1900/2100
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
📷 Camera
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Back camera (main camera)	3.1 megapixels	(dual camera) 13 megapixels 5MP depth f/1.9
Main camera resolution	2048x1536 pixels	4128x3096 pixels
Video recording (primary)	CIF (352x288) 24 fps	Full HD (1920x1080) 30 fps
Flash	Not supported	LED flash on both cameras
Focal aperture	feature not registered	f/1.9 (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
Autofocus	Not supported	Autofocus
Touch focus	Not supported	Supported
Image stabilization	Not supported	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Not supported	Face detection, Smile detection
BSI sensor	Not supported	Not supported
HDR	Not supported	HDR photo only main camera
Camera extras	feature not registered	feature not registered
📸 Front camera
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Front camera (secondary)	Not supported	8 megapixels
Front camera resolution	Not supported	3264x2448 pixels
Video recording (secondary)	Not supported	Full HD (1920x1080)
Front flash	Not supported	LED
Focal aperture	feature not registered	f/1.9 (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
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Loudspeaker	Mono sound (not stereo)	Mono sound (not stereo)
Active noise cancellation	1 microphone	Not supported
Radio	FM (RDS)	FM
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263, WMV	MP4, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
USB	MicroUSB 2.0	MicroUSB 2.0
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	2.0 + A2DP	5.0 + A2DP/LE
WiFi	802.11 b/g/n [wifi4] (2.4GHz)	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Not supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Sensors	Accelerometer Ambient light sensor Compass Proximity sensor	Accelerometer ANT+ Face unlock 2D Fingerprint sensor (front-mounted) Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Battery type	Li-Ion: lithium-ion (Removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	1170 mAh	3000 mAh
Charger, watts	Wired charging	Wired charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	5 hours	20 hours
Standby	334 hours (13.9 days)	feature not registered
➕ Other features
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Not supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, Flash player	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Fixed QWERTY keyboard	Not supported
Miscellaneous	• Colors: Golden Bronze, Cabernet • 2GB microSD included • CrystalTalk Plus • BackTrack navigation pad • Kodak Perfect Touch • HAC • Java framework	• Colors: Black, Gold, Rose Gold, White • Samsung Pay
☢️ Radiation rate
	Motorola Charm (MB502)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.543W/kg (head), 1.397W/kg (body)