Samsung Galaxy C8 (SM-C7100 32GB) vs T-Mobile Sidekick 4G (SGH-T839)

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Side by side comparison between Samsung Galaxy C8 vs T-Mobile Sidekick 4G phones, differences, pros, cons and full specifications. What's the better?

7/18/2018 10:01 PM, updated: 6/6/2025 11:25 AM

Compare T-Mobile Sidekick 4G X Samsung Galaxy C8 (SM-C7100 32GB) 24Points

Specifications Compare Models Pictures

5.5"
AMOLED

1080x1920

13
MP

16mp

3GB
RAM

Octa-core

3000
mAh

(Non removable)

02Points T-Mobile Sidekick 4G (SGH-T839) Compare Samsung Galaxy C8 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? Samsung Galaxy C8 (SM-C7100 32GB)

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!

24 Advantages Samsung Galaxy C8 (SM-C7100 32GB)	vs	2 Advantages T-Mobile Sidekick 4G (SGH-T839)
+2.6GHz 64bit Octa-core (16nm)4 times More powerful processor, you can open your applications faster	vs	1GHz 32bit Single-core
+3GB LPDDR4X5 times More RAM memory. Typically more responsive and better for multitasking.	vs	512MB
+32GB (23GB available)66 times More internal storage for applications and files	vs	1GB (350MB available)
+Until 256GB microSD, microSDXC7 times More external storage for files using memory cards	vs	Until 32GB microSD, microSDHC
+7.9 millimeters (0.31 inches)90% Thinner	vs	15 millimeters (0.59 inches)
+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid	vs	TFT LCD
+1080x1920 pixels4 times Higher resolution screen	vs	480x800 pixels
+401 PPI50% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	267 PPI
+5.5"57% Larger screen	vs	3.5"
+(dual camera) 13MP + 5MP5 times Higher resolution main camera	vs	(back) 3.1MP
+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light	vs	Not supported
+(front) 16MP51 times Higher resolution secondary camera to take pictures and selfies	vs	(front) 0.3MP
+Full HD (1920x1080)5 times More image quality for recording videos with the primary camera	vs	VGA (720x480)
+Android 8.1 OreoAdvantage Android 8.1 Oreo is newer and safer	vs	Android 2.2.1 Froyo
+4G LTE-AAdvantage The 4G LTE-A network is newer and faster	vs	3G+ HSPA+
+(4G LTE-A) 300 Mbps13 times Faster for surfing the internet and download files	vs	(3G+ HSPA+) 21 Mbps
+CompassAdvantage Sensors help you use the device	vs	Not supported
+Fingerprint sensor (front-mounted)Advantage Sensors help you use the device	vs	Not supported
+GyroscopeAdvantage Sensors help you use the device	vs	Not supported
+3000 mAh100% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	1500 mAh
+2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM) (dedicated slot)
+FMAdvantage The radio lets you listen to your songs and sports in general	vs	Not supported
+4.2 + A2DPAdvantage Bluetooth 4.2 + A2DP is newer and faster	vs	3.0 + A2DP
+HTML, XHTML, HTML5Advantage Better sites viewing on the internet	vs	HTML, XHTML, Flash player
180 grams (6.3 ounces)	vs	+162 grams (5.67 ounces)11% Lighter
Li-Ion: lithium-ion (Non removable)	vs	+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily

15 Common items in both devices

16 million

Only digital zoom

Autofocus

Capacitive

Multitouch

Accelerometer

Ambient light sensor

+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
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
Change model
Model	Galaxy C8 (SM-C7100 32GB)	Sidekick 4G (SGH-T839)
Other model names	盖乐世 C8 3GB RAM + 32GB, SM-C7100ZKDCHC	T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G
Country or region available	China, Hong Kong	USA
Brand	Samsung	T-Mobile
Release date	9/1/2017	4/20/2011
Depth	7.9 millimeters (0.31 inches)	15 millimeters (0.59 inches)
Size (width x height)	74.7 x 152.4 millimeters (2.94 x 6 in)	61 x 127 millimeters (2.4 x 5 in)
Weight	180 grams (6.3 ounces)	162 grams (5.67 ounces)
Build, materials	Aluminum body, glass front	feature not registered
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
Display type	Super AMOLED	TFT LCD
Screen size	5.5" inches	3.5" inches
Screen-to-body ratio	~73.3% (screen-to-body ratio)	~45% (screen-to-body ratio)
Display resolution	1080x1920 pixels	480x800 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	401 PPI	267 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Not supported
Refresh rate	60Hz	feature not registered
Display features	Always-On Display	feature not registered
🤖 Operating System
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
System version	Android 7.1.1 Nougat	Android 2.2.1 Froyo
Firmware update	Android 8.1 Oreo	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
Chipset	64bit: MediaTek Helio P25 (MT6757T) (16nm)	32bit: Samsung Exynos 3
CPU	Octa-core, 2 processors: 4x 2.6GHz ARM Cortex-A53 (Quad-core) 4x 1.6GHz ARM Cortex-A53 (Quad-core)	Single-core, 1 processor: 1x 1GHz ARM Cortex-A8 (Single-core)
GPU graphical controller	ARM Mali-T880 MP2 (1GHz)	PowerVR SGX540
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
RAM memory	3GB LPDDR4X	512MB
Internal storage	32GB (23GB available) eMMC 5.1	1GB (350MB available)
External storage	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Until 32GB microSD, microSDHC (dedicated slot)
📶 Mobile networks
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)	Not supported
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	1 slot (Single-SIM) Standard mini-SIM (2FF)
Maximum Download / Upload	300/50 Mbps	21/5.76 Mbps
Network technology	2G, 3G, 4G	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	CDMA 800, GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1900/2100	UMTS 1700/2100
Primary 4G network	LTE Cat6 (Bands 1, 3, 5, 7, 8) TD-LTE (Bands 38, 39, 40, 41)	Not supported
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
Secondary 2G network	GSM 850/900/1800/1900	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	Not supported
📷 Camera
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
Back camera (main camera)	(dual camera) 13 megapixels 5MP f/1.9	3.1 megapixels
Main camera resolution	4128x3096 pixels	2048x1536 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	VGA (720x480) 30 fps
Flash	LED flash on both cameras	Not supported
Focal aperture	f/1.7 (aperture)	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	Supported	feature not registered
Image stabilization	EIS: Digital stabilization	feature not registered
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	feature not registered
BSI sensor	Not supported	feature not registered
HDR	HDR photo only main camera	feature not registered
Camera extras	feature not registered	feature not registered
📸 Front camera
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
Front camera (secondary)	16 megapixels	0.3 megapixels
Front camera resolution	4608x3456 pixels	640x480 pixels
Video recording (secondary)	Full HD (1920x1080)	Not supported
Front flash	LED	Not supported
Focal aperture	f/1.9 (aperture)	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 C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
Loudspeaker	Mono sound (not stereo)	Supported
Active noise cancellation	2 microphones	feature not registered
Radio	FM	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, MKV	MP4, H.264, H.263
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, eAAC+
🔌 Connectivity
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
USB	MicroUSB 2.0, USB OTG On-The-Go	MicroUSB 2.0
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	4.2 + A2DP	3.0 + A2DP
WiFi	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot	802.11 b/g/n [wifi4] (2.4GHz)
DLNA	Not supported	feature not registered
GPS	A-GPS, GeoTagging, GLONASS	A-GPS, GeoTagging
NFC	Not supported	Not supported
Infrared port	Not supported	feature not registered
🧭 Sensors
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor (front-mounted) Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
Battery type	Li-Ion: lithium-ion (Non removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	3000 mAh	1500 mAh
Charger, watts	Wired charging	Wired charging
Inductive / wireless charging	Not supported	feature not registered
Talk time autonomy	16 hours	6.5 hours
Standby	feature not registered	456 hours (19 days)
➕ Other features
	Galaxy C8 (SM-C7100 32GB)	T-Mobile Sidekick 4G (SGH-T839)
Call control	Voice dialing, Voice recorder	Voice recorder
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, Flash player
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Retractable QWERTY keyboard
Miscellaneous	• Colors: Black, Gold, Pink	• 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 C8 (SM-C7100 32GB)	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.)	0.719W/kg (head), 1.26W/kg (body)	feature not registered