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T-Mobile Sidekick 4G (SGH-T839) vs Apple Watch 3 (Edition 42mm)

Side by side comparison between T-Mobile Sidekick 4G vs Apple Watch 3 devices, differences, pros, cons and full specifications. What's the better?

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Compare Apple Watch 3 X T-Mobile Sidekick 4G (SGH-T839) 12Points
T-Mobile Sidekick 4G (SGH-T839)
Specifications Compare Models Pictures
3.5"
TFT

480x800

3.1
MP

0.3mp

512MB
RAM

Single-core

1500
mAh

(Removable)

vs
17Points Apple Watch 3 (Edition 42mm) Compare T-Mobile Sidekick 4G X
Apple Watch 3 (Edition 42mm)
Specifications Compare Models Pictures
1.65"
AMOLED

390x312

N/A
768MB
RAM

Dual-core

352
mAh

(Non removable)

What's the better device? Apple Watch 3 (Edition 42mm)

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!

Sidekick 4G (SGH-T839)} 12 Advantages T-Mobile Sidekick 4G (SGH-T839) vs Watch 3 (Edition 42mm)} 17 Advantages Apple Watch 3 (Edition 42mm)
+Until 32GB microSD, microSDHCAdvantage
More external storage for files using memory cards		vsNot supported
+480x800 pixels2 times
Higher resolution screen		vs390x312 pixels
+3.5"112%
Larger screen		vs1.65"
+(back) 3.1MPAdvantage
With a camera you can take pictures anywhere		vsNot supported
+VGA (720x480)Advantage
More image quality for recording videos with the primary camera		vsNot supported
+3500000 apps (Google Play Store)150%
More apps available to download and use		vs1400000 apps (App Store)
+Proximity sensorAdvantage
Sensors help you use the device		vsNot supported
+1500 mAh3 times
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use		vs352 mAh
+Li-Ion: lithium-ion (Removable)Advantage
Removable battery can be replaced easily		vsLi-Ion: lithium-ion (Non removable)
+3.5mm jackAdvantage
Headsets with 3.5mm Jack size are more common and easy to find in stores		vsNot supported
+MicroUSB 2.0Advantage
Newer and faster USB version for transferring photos, mp3 or data.		vsNot supported
+HTML, XHTML, Flash playerAdvantage
Better sites viewing on the internet		vsNot supported
1GHz 32bit Single-corevs+1GHz 32bit Dual-core41%
More powerful processor, you can open your applications faster
512MBvs+768MB LPDDR450%
More RAM memory. Typically more responsive and better for multitasking.
1GB (350MB available)vs+16GB (10GB available)28 times
More internal storage for applications and files
162 grams (5.67 ounces)vs+46 grams (1.61 ounces)3 times
Lighter
15 millimeters (0.59 inches)vs+11.4 millimeters (0.45 inches)32%
Thinner
TFT LCDvs+AMOLEDAdvantage
AMOLED display is brighter and more vivid
267 PPIvs+303 PPI13%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
3G+ HSPA+vs+4G LTEAdvantage
The 4G LTE network is newer and faster
(3G+ HSPA+) 21 Mbpsvs+(4G LTE) 150 Mbps6 times
Faster for surfing the internet and download files
Not supportedvs+BarometerAdvantage
Sensors help you use the device
Not supportedvs+GyroscopeAdvantage
Sensors help you use the device
Not supportedvs+Heart rateAdvantage
Sensors help you use the device
Not supportedvs+PedometerAdvantage
Sensors help you use the device
3.0 + A2DPvs+4.2 + A2DPAdvantage
Bluetooth 4.2 + A2DP is newer and faster
Not supportedvs+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
Not supportedvs+Sapphire GlassAdvantage
Protection against scratches on the screen lets you carry your phone with your keys
Not supportedvs+5 ATMAdvantage
Protection against water allows you talk to your friends in the rain, for example
7 Common items in both devices
16 million
Capacitive
Multitouch
Accelerometer
Ambient light sensor
A-GPS, GeoTagging / A-GPS, GeoTagging, GLONASS
802.11 b/g/n [wifi4]
+ 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 Clear highlight

📱 Model features

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
Change model 
ModelSidekick 4G (SGH-T839)Watch 3 (Edition 42mm)
Other model namesT-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4GApple Watch Edition Series 3 GPS + Cellular (4G LTE) Ceramic
Country or region availableUSA
USA		(Global, International)
(Global, International)
BrandT-MobileApple
Release date4/20/20119/22/2017
Depth15 millimeters (0.59 inches)11.4 millimeters (0.45 inches)
Size (width x height)61 x 127 millimeters (2.4 x 5 in)36.5 x 42.6 millimeters (1.44 x 1.68 in)
Weight162 grams (5.67 ounces)46 grams (1.61 ounces)
Build, materialsfeature not registeredCeramic body, glass front
Protection against water and othersNot supported5 ATM: 50 meters waterproof

📲 Display

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
Display typeTFT LCDAMOLED
Screen size3.5" inches1.65" inches
Screen-to-body ratio~45% (screen-to-body ratio)~55.1% (screen-to-body ratio)
Display resolution480x800 pixels390x312 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)267 PPI303 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedSapphire Glass
Refresh ratefeature not registeredfeature not registered
Display featuresfeature not registeredfeature not registered

🤖 Operating System

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
System versionAndroid 2.2.1 FroyoWatchOS 4.0
Firmware updatefeature not registeredWatchOS 5.0
User Interfacefeature not registeredfeature not registered

⚙️ Processor

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
Chipset32bit: Samsung Exynos 332bit: Apple S3 (28nm)
CPUSingle-core, 1 processor:
1x 1GHz ARM Cortex-A8 (Single-core)		Dual-core, 1 processor:
2x 1GHz ARM Cortex-A7 (Dual-core)
GPU graphical controllerPowerVR SGX540PowerVR G6200
Performance (benchmark)feature not registeredfeature not registered

💽 Memory and storage

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
RAM memory512MB768MB LPDDR4
Internal storage1GB (350MB available)16GB (10GB available)
External storageUntil 32GB microSD, microSDHC
(dedicated slot)		Not supported

📶 Mobile networks

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
Dual-SIMNot supportedNot supported
SIM card1 slot (Single-SIM)
Standard mini-SIM (2FF)		1 slot (Single-SIM)
e-SIM (Eletronic)
Maximum Download / Upload21/5.76 Mbps150/50 Mbps
Network technology2G, 3G2G, 3G, 4G
Frequency, bands Expand band details Collapse 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 1700/2100A1891 model (Europe,Australia):
UMTS 800/850/900/2100
A1861 model (USA,LATAM,Canada):
UMTS 800/850/1700/1900
A1892 model (China):
UMTS 2100
Primary 4G networkNot supportedLTE Cat4
A1891 model (Europe,Australia):
LTE (Bands 1,3,5,7,8,18,19,20,26)
A1861 model (USA,LATAM,Canada):
LTE (Bands 2,4,5,12,13,17,18,19,25,26)
TD-LTE (Bands 41)
A1892 model (China):
LTE (Bands 1,3)
TD-LTE (Bands 39,40,41)
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
Secondary 2G networkNot supportedNot supported
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedNot supported

📷 Camera

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
Back camera (main camera)3.1 megapixelsNot supported
Main camera resolution2048x1536 pixelsNot supported
Video recording (primary)VGA (720x480) 30 fpsNot supported
FlashNot supportedNot supported
Focal aperturefeature not registeredfeature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered
AutofocusAutofocusNot supported
Touch focusfeature not registeredNot supported
Image stabilizationfeature not registeredNot supported
ZoomOnly digital zoomNot supported
Face/smile detectionfeature not registeredNot supported
BSI sensorfeature not registeredNot supported
HDRfeature not registeredNot supported
Camera extrasfeature not registeredfeature not registered

📸 Front camera

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
Front camera (secondary)0.3 megapixelsNot supported
Front camera resolution640x480 pixelsNot supported
Video recording (secondary)Not supportedNot supported
Front flashNot supportedNot supported
Focal aperturefeature not registeredfeature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered

🔉 Sound and multimedia

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
LoudspeakerSupportedSupported
Active noise cancellationfeature not registeredNot supported
RadioNot supportedNot supported
TVNot supportedNot supported
Video formatsMP4, H.264, H.263MP4, H.264, H.263
Audio formatsMP3, WAV, eAAC+MP3, WAV, eAAC+, FLAC

🔌 Connectivity

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
USBMicroUSB 2.0Not supported
Audio output3.5mm jackNot supported
TV outputNot supportedNot supported
Bluetooth3.0 + A2DP4.2 + A2DP
WiFi802.11 b/g/n [wifi4] (2.4GHz)802.11 b/g/n [wifi4] (2.4GHz)
DLNAfeature not registeredNot supported
GPSA-GPS, GeoTaggingA-GPS, GeoTagging, GLONASS
NFCNot supportedSupported
Infrared portfeature not registeredNot supported

🧭 Sensors

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
SensorsAccelerometer
Ambient light sensor
Proximity sensor		Accelerometer
Ambient light sensor
Barometer
Gyroscope
Heart rate
Pedometer
Vibrating alertSupportedSupported

🔋 Battery

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
Battery typeLi-Ion: lithium-ion (Removable)Li-Ion: lithium-ion (Non removable)
Battery capacity1500 mAh352 mAh
Charger, wattsWired chargingWired charging
Inductive / wireless chargingfeature not registeredMagnetic charging (dock)
Talk time autonomy6.5 hours18 hours
Standby456 hours (19 days)feature not registered

➕ Other features

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
Call controlVoice recorderVoice dialing
MessagingSMS (T9), MMS, E-mail, Push mailSMS, E-mail
Hands-free callingSupportedSupported
Video callingSupportedNot supported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, Flash playerNot supported
AntennaInternal antennaInternal antenna
Qwerty physical keyboardRetractable QWERTY keyboardNot supported
Miscellaneous• Colors: Matte black, Pearl magenta
• 2GB microSD included
• Samsung TouchWiz UI
• Optical trackpad
• HAC M3/T3
• T-Mobile TV
• DLNA
• WiFi hotspot
• Java framework		• Colors: White, Gray
• Sport bands
• 1000 nits screen
• 3D Touch display
• Siri

☢️ Radiation rate

T-Mobile Sidekick 4G (SGH-T839)Apple Watch 3 (Edition 42mm)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registered0.35W/kg (head), 0.18W/kg (body)
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
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