Samsung Galaxy 551 (GT-i5510M) vs T-Mobile Sidekick 4G (SGH-T839)

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Side by side comparison between Samsung Galaxy 551 vs T-Mobile Sidekick 4G phones, differences, pros, cons and full specifications. What's the better?

3/19/2017 11:23 PM, updated: 5/10/2020 8:29 PM

Compare T-Mobile Sidekick 4G X Samsung Galaxy 551 (GT-i5510M) 04Points

Specifications Compare Models Pictures

3.2"
TFT

240x400

3.1
MP

512MB
RAM

Single-core

1200
mAh

(Removable)

13Points T-Mobile Sidekick 4G (SGH-T839) Compare Samsung Galaxy 551 X

Specifications Compare Models Pictures

3.5"
TFT

480x800

3.1
MP

0.3mp

512MB
RAM

Single-core

1500
mAh

(Removable)

What's the better phone? T-Mobile Sidekick 4G (SGH-T839)

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!

4 Advantages Samsung Galaxy 551 (GT-i5510M)	vs	13 Advantages T-Mobile Sidekick 4G (SGH-T839)
+117 grams (4.1 ounces)38% Lighter	vs	162 grams (5.67 ounces)
+Android 2.3.6 GingerbreadAdvantage Android 2.3.6 Gingerbread is newer and safer	vs	Android 2.2.1 Froyo
+CompassAdvantage Sensors help you use the device	vs	Not supported
+FM (RDS)Advantage The radio lets you listen to your songs and sports in general	vs	Not supported
600MHz 32bit Single-core	vs	+1GHz 32bit Single-core35% More powerful processor, you can open your applications faster
512MB (173MB available)	vs	+1GB (350MB available)102% More internal storage for applications and files
15.2 millimeters (0.6 inches)	vs	+15 millimeters (0.59 inches)1% Thinner
240x400 pixels	vs	+480x800 pixels3 times Higher resolution screen
146 PPI	vs	+267 PPI83% Crisper display of text, images and videos because it has more pixels per inch (ppi)
3.2"	vs	+3.5"9% Larger screen
Not supported	vs	+(front) 0.3MPAdvantage A front-camera is best for taking selfies
QVGA (320x240)	vs	+VGA (720x480)4 times More image quality for recording videos with the primary camera
3G HSUPA	vs	+3G+ HSPA+Advantage The 3G+ HSPA+ network is newer and faster
(3G HSUPA) 7.2 Mbps	vs	+(3G+ HSPA+) 21 Mbps192% Faster for surfing the internet and download files
Not supported	vs	+Ambient light sensorAdvantage Sensors help you use the device
1200 mAh	vs	+1500 mAh25% 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

20 Common items in both devices

512MB

Until 32GB microSD, microSDHC

TFT LCD

16 million

(back) 3.1MP

Only digital zoom

Autofocus

+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
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
Change model
Model	Galaxy 551 (GT-i5510M)	Sidekick 4G (SGH-T839)
Other model names	Samsung Galaxy i5510M, Samsung Callisto	T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G
Country or region available	(Latin America), Brazil	USA
Brand	Samsung	T-Mobile
Release date	11/1/2010	4/20/2011
Depth	15.2 millimeters (0.6 inches)	15 millimeters (0.59 inches)
Size (width x height)	55 x 111 millimeters (2.17 x 4.37 in)	61 x 127 millimeters (2.4 x 5 in)
Weight	117 grams (4.1 ounces)	162 grams (5.67 ounces)
Build, materials	feature not registered	feature not registered
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
Display type	TFT LCD	TFT LCD
Screen size	3.2" inches	3.5" inches
Screen-to-body ratio	~47.7% (screen-to-body ratio)	~45% (screen-to-body ratio)
Display resolution	240x400 pixels	480x800 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	146 PPI	267 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Not supported
Refresh rate	feature not registered	feature not registered
Display features	feature not registered	feature not registered
🤖 Operating System
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
System version	Android 2.2 Froyo	Android 2.2.1 Froyo
Firmware update	Android 2.3.6 Gingerbread	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
Chipset	32bit: Qualcomm Snapdragon S1 MSM7227 (65nm)	32bit: Samsung Exynos 3
CPU	Single-core, 1 processor: 1x 600MHz ARM1136EJ-S (Single-core)	Single-core, 1 processor: 1x 1GHz ARM Cortex-A8 (Single-core)
GPU graphical controller	Qualcomm Adreno 200	PowerVR SGX540
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
RAM memory	512MB	512MB
Internal storage	512MB (173MB available)	1GB (350MB available)
External storage	Until 32GB microSD, microSDHC (dedicated slot)	Until 32GB microSD, microSDHC (dedicated slot)
📶 Mobile networks
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
Dual-SIM	Not supported	Not supported
SIM card	1 slot (Single-SIM) Standard mini-SIM (2FF)	1 slot (Single-SIM) Standard mini-SIM (2FF)
Maximum Download / Upload	7.2 Mbps	21/5.76 Mbps
Network technology	2G, 3G	2G, 3G
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 850/2100	UMTS 1700/2100
Primary 4G network	Not supported	Not supported
Primary 5G network	Not supported	Not supported
Primary data network	CSD, GPRS, EDGE, UMTS, HSDPA, HSUPA	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
Secondary 2G network	Not supported	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	Not supported
📷 Camera
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
Back camera (main camera)	3.1 megapixels	3.1 megapixels
Main camera resolution	2048x1536 pixels	2048x1536 pixels
Video recording (primary)	QVGA (320x240) 15 fps	VGA (720x480) 30 fps
Flash	Not supported	Not supported
Focal aperture	feature not registered	feature not registered
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	Autofocus	Autofocus
Touch focus	Not supported	feature not registered
Image stabilization	Not supported	feature not registered
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Not supported	feature not registered
BSI sensor	Not supported	feature not registered
HDR	Not supported	feature not registered
Camera extras	feature not registered	feature not registered
📸 Front camera
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
Front camera (secondary)	Not supported	0.3 megapixels
Front camera resolution	Not supported	640x480 pixels
Video recording (secondary)	Not supported	Not supported
Front flash	Not supported	Not supported
Focal aperture	feature not registered	feature not registered
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
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
Loudspeaker	Supported	Supported
Active noise cancellation	Not supported	feature not registered
Radio	FM (RDS)	Not supported
TV	Not supported	Not supported
Video formats	3GP, 3G2, MJPG, MP4, WMV, H.263	MP4, H.264, H.263
Audio formats	MP3, WAV, eAAC+	MP3, WAV, eAAC+
🔌 Connectivity
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
USB	MicroUSB 2.0	MicroUSB 2.0
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	3.0 + A2DP	3.0 + A2DP
WiFi	802.11 b/g/n [wifi4] (2.4GHz)	802.11 b/g/n [wifi4] (2.4GHz)
DLNA	Supported	feature not registered
GPS	A-GPS, GeoTagging	A-GPS, GeoTagging
NFC	Not supported	Not supported
Infrared port	Not supported	feature not registered
🧭 Sensors
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
Sensors	Accelerometer Compass Proximity sensor	Accelerometer Ambient light sensor Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
Battery type	Li-Ion: lithium-ion (Removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	1200 mAh	1500 mAh
Charger, watts	Wired charging	Wired charging
Inductive / wireless charging	feature not registered	feature not registered
Talk time autonomy	5 hours	6.5 hours
Standby	370 hours (15.4 days)	456 hours (19 days)
➕ Other features
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
Call control	Voice dialing, Voice recorder, Voice commands	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, Flash player
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Retractable QWERTY keyboard	Retractable QWERTY keyboard
Miscellaneous	• Colors: Black • 1GB microSD included • Samsung TouchWiz 3.0 Java framework	• Colors: Matte black, Pearl magenta • 2GB microSD included • Samsung TouchWiz UI • Optical trackpad • HAC M3/T3 • T-Mobile TV • DLNA • WiFi hotspot Java framework
☢️ Radiation rate
	Galaxy 551 (GT-i5510M)	T-Mobile Sidekick 4G (SGH-T839)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered