T-Mobile Sidekick 4G (SGH-T839) vs Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)

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Side by side comparison between T-Mobile Sidekick 4G vs Asus Zenfone 3 Zoom phones, differences, pros, cons and full specifications. What's the better?

7/30/2017 11:34 AM, updated: 5/10/2020 8:29 PM

Compare Asus Zenfone 3 Zoom X T-Mobile Sidekick 4G (SGH-T839) 02Points

Specifications Compare Models Pictures

3.5"
TFT

480x800

3.1
MP

0.3mp

512MB
RAM

Single-core

1500
mAh

(Removable)

27Points Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB) Compare T-Mobile Sidekick 4G X

Specifications Compare Models Pictures

5.5"
AMOLED

1080x1920

12
MP

13mp

3GB
RAM

Octa-core

5000
mAh

(Non removable)

What's the better phone? Asus Zenfone 3 Zoom (ZE553KL 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!

2 Advantages T-Mobile Sidekick 4G (SGH-T839)	vs	27 Advantages Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
+162 grams (5.67 ounces)5% Lighter	vs	170 grams (5.95 ounces)
+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily	vs	Li-Ion: lithium-ion (Non removable)
1GHz 32bit Single-core	vs	+2GHz 64bit Octa-core4 times More powerful processor, you can open your applications faster
512MB	vs	+3GB LPDDR35 times More RAM memory. Typically more responsive and better for multitasking.
1GB (350MB available)	vs	+32GB (22GB available)63 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
15 millimeters (0.59 inches)	vs	+8 millimeters (0.31 inches)88% Thinner
TFT LCD	vs	+AMOLEDAdvantage AMOLED display is brighter and more vivid
480x800 pixels	vs	+1080x1920 pixels4 times Higher resolution screen
267 PPI	vs	+401 PPI50% Crisper display of text, images and videos because it has more pixels per inch (ppi)
3.5"	vs	+5.5"57% Larger screen
(back) 3.1MP	vs	+(dual camera) 12MP + 12MP7 times Higher resolution main camera
Not supported	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
(front) 0.3MP	vs	+(front) 13MP41 times Higher resolution secondary camera to take pictures and selfies
VGA (720x480)	vs	+4K UHD (3840x2160)23 times More image quality for recording videos with the primary camera
Android 2.2.1 Froyo	vs	+Android 8.0 OreoAdvantage Android 8.0 Oreo is newer and safer
3G+ HSPA+	vs	+4G LTEAdvantage The 4G LTE network is newer and faster
(3G+ HSPA+) 21 Mbps	vs	+(4G LTE) 150 Mbps6 times Faster for surfing the internet and download files
Not supported	vs	+CompassAdvantage Sensors help you use the device
Not supported	vs	+Fingerprint sensorAdvantage Sensors help you use the device
Not supported	vs	+GyroscopeAdvantage Sensors help you use the device
1500 mAh	vs	+5000 mAh2 times Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
1 slot (Single-SIM) (dedicated slot)	vs	+2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)Advantage You can have more mobile carriers/operators on the same device.
Not supported	vs	+FMAdvantage The radio lets you listen to your songs and sports in general
3.0 + A2DP	vs	+4.2 + A2DPAdvantage Bluetooth 4.2 + A2DP 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.
HTML, XHTML, Flash player	vs	+HTML, XHTML, HTML5Advantage Better sites viewing on the internet
Not supported	vs	+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys

14 Common items in both devices

16 million

Autofocus / LDAF/PDAF: laser/phase detection autofocus

Capacitive

Multitouch

Accelerometer

Ambient light sensor

Proximity sensor

+7 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
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Change model		Choose the model
Model	Sidekick 4G (SGH-T839)	Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Other model names	T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G	Asus Zenfone 3 Zoom ZE553KL (32GB + 3GB RAM)
Country or region available	USA	Brazil, Canada, USA
Brand	T-Mobile	Asus
Release date	4/20/2011	1/1/2017
Depth	15 millimeters (0.59 inches)	8 millimeters (0.31 inches)
Size (width x height)	61 x 127 millimeters (2.4 x 5 in)	77 x 154.3 millimeters (3.03 x 6.07 in)
Weight	162 grams (5.67 ounces)	170 grams (5.95 ounces)
Build, materials	feature not registered	Aluminum body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Display type	TFT LCD	AMOLED
Screen size	3.5" inches	5.5" inches
Screen-to-body ratio	~45% (screen-to-body ratio)	~70.2% (screen-to-body ratio)
Display resolution	480x800 pixels	1080x1920 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch 10-points
Pixel density (dot pitch)	267 PPI	401 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 5
Refresh rate	feature not registered	feature not registered
Display features	feature not registered	feature not registered
🤖 Operating System
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
System version	Android 2.2.1 Froyo	Android 6.0.1 Marshmallow
Firmware update	feature not registered	Android 8.0 Oreo
User Interface	feature not registered	feature not registered
⚙️ Processor
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Chipset	32bit: Samsung Exynos 3	64bit: Qualcomm Snapdragon 625 MSM8953 (14nm)
CPU	Single-core, 1 processor: 1x 1GHz ARM Cortex-A8 (Single-core)	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core)
GPU graphical controller	PowerVR SGX540	Qualcomm Adreno 506 650Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
RAM memory	512MB	3GB LPDDR3
Internal storage	1GB (350MB available)	32GB (22GB available)
External storage	Until 32GB microSD, microSDHC (dedicated slot)	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	1 slot (Single-SIM) Standard mini-SIM (2FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	21/5.76 Mbps	150/50 Mbps
Network technology	2G, 3G	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 1700/2100	Global: UMTS 850/900/1900/2100 India/Indonesia: TD-SCDMA 1900/2000 UMTS 850/900/2100 USA/Brazil: UMTS 850/900/1700/1900/2100 China: UMTS 850/900/1900/2100 Taiwan/HongKong/Japan/SG/PH: TD-SCDMA 190
Primary 4G network	Not supported	LTE Cat4 Global version: LTE (Bands 1,2,3,5,7,8,20) India/Indonesia version: LTE (Bands 1,3,5,8) USA/Brazil version: LTE (Bands 1,2,3,4,5,7,8,17,28) China version: LTE (Bands 1,2,3,5,7,8) TD-LTE (Bands 38,39,40,41) Taiwan/Japan/HongKong/Singapore/Philippines version: LTE (Bands 1,2,3,5,7,8,18,19,26,28) TD-LTE (Bands 38,39,40,41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+	GPRS, EDGE, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
Secondary 2G network	Not supported	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	GPRS, EDGE
📷 Camera
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Back camera (main camera)	3.1 megapixels	(dual camera) 12 megapixels 12MP f/2.859mm
Main camera resolution	2048x1536 pixels	4000x3000 pixels
Video recording (primary)	VGA (720x480) 30 fps	4K UHD (3840x2160) 24 fps
Flash	Not supported	Dual-LED flash
Focal aperture	feature not registered	f/1.7 (aperture)
Focal length	feature not registered	25mm (lens)
Sensor size	feature not registered	1/2.5" inches
Pixel size	feature not registered	1.4µm pixel
Autofocus	Autofocus	LDAF/PDAF: laser/phase detection autofocus
Touch focus	feature not registered	Supported
Image stabilization	feature not registered	OIS (4-axis): Optical stabilization
Zoom	Only digital zoom	Digital and optical zoom
Face/smile detection	feature not registered	Face detection, Smile detection
BSI sensor	feature not registered	Not supported
HDR	feature not registered	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Front camera (secondary)	0.3 megapixels	13 megapixels
Front camera resolution	640x480 pixels	4128x3096 pixels
Video recording (secondary)	Not supported	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	feature not registered	f/2.0 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	1/3" inches
Pixel size	feature not registered	1.12µm pixel
🔉 Sound and multimedia
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Loudspeaker	Supported	Supported
Active noise cancellation	feature not registered	2 microphones or more
Radio	Not supported	FM
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263	MP4, H.264, H.263
Audio formats	MP3, WAV, eAAC+	MP3, OGG, eAAC+, FLAC
🔌 Connectivity
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
USB	MicroUSB 2.0	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	3.0 + A2DP	4.2 + A2DP
WiFi	802.11 b/g/n [wifi4] (2.4GHz)	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot
DLNA	feature not registered	Not supported
GPS	A-GPS, GeoTagging	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Not supported	Not supported
Infrared port	feature not registered	Supported
🧭 Sensors
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Sensors	Accelerometer Ambient light sensor Proximity sensor	Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Battery type	Li-Ion: lithium-ion (Removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	1500 mAh	5000 mAh
Charger, watts	Wired charging	10W Wired charging
Inductive / wireless charging	feature not registered	feature not registered
Talk time autonomy	6.5 hours	48 hours (2 days)
Standby	456 hours (19 days)	1008 hours (42 days)
➕ Other features
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
Call control	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	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	Retractable QWERTY keyboard	Not 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: Black, Silver, Rose Gold • ASUS ZenUI 3.0 • 2.5D glass screen • 500nits brightness screen • Sony IMX362 back camera sensor • Sony IMX214 front camera sensor • DTS sound enhancement • 24-bit/192kHz audio • 100GB Google Drive
☢️ Radiation rate
	T-Mobile Sidekick 4G (SGH-T839)	Asus Zenfone 3 Zoom (ZE553KL 32GB/3GB)
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