ZTE Axon 7 (128GB) vs T-Mobile Sidekick 4G (SGH-T839)

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Side by side comparison between ZTE Axon 7 vs T-Mobile Sidekick 4G phones, differences, pros, cons and full specifications. What's the better?

1/18/2017 9:52 AM, updated: 5/10/2020 8:29 PM

Compare T-Mobile Sidekick 4G X ZTE Axon 7 (128GB) 28Points

Specifications Compare Models Pictures

5.5"
AMOLED

1440x2560

20
MP

8mp

6GB
RAM

Quad-core

3250
mAh

(Non removable)

02Points T-Mobile Sidekick 4G (SGH-T839) Compare ZTE Axon 7 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? ZTE Axon 7 (128GB)

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!

28 Advantages ZTE Axon 7 (128GB)	vs	2 Advantages T-Mobile Sidekick 4G (SGH-T839)
+2.15GHz 64bit Quad-core3 times More powerful processor, you can open your applications faster	vs	1GHz 32bit Single-core
+6GB LPDDR411 times More RAM memory. Typically more responsive and better for multitasking.	vs	512MB
+128GB (114GB available)333 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)
+AMOLEDAdvantage AMOLED display is brighter and more vivid	vs	TFT LCD
+1440x2560 pixels9 times Higher resolution screen	vs	480x800 pixels
+534 PPI100% 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"
+(back) 20MP5 times Higher resolution main camera	vs	(back) 3.1MP
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	Not supported
+(front) 8MP25 times Higher resolution secondary camera to take pictures and selfies	vs	(front) 0.3MP
+4K UHD (3840x2160)23 times More image quality for recording videos with the primary camera	vs	VGA (720x480)
+Android 6.0.1 MarshmallowAdvantage Android 6.0.1 Marshmallow 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 sensorAdvantage Sensors help you use the device	vs	Not supported
+GyroscopeAdvantage Sensors help you use the device	vs	Not supported
+3250 mAh117% 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)
+802.11 b/g/n/ac [wifi5]Advantage WiFi 802.11 b/g/n/ac [wifi5] is newer and faster	vs	802.11 b/g/n [wifi4]
+4.2 + A2DPAdvantage Bluetooth 4.2 + A2DP is newer and faster	vs	3.0 + A2DP
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
+USB 3.1 Type-C reversible connectorAdvantage Newer and faster USB version for transferring photos, mp3 or data.	vs	MicroUSB 2.0
+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.	vs	MicroUSB 2.0
+HTML, XHTML, HTML5Advantage Better sites viewing on the internet	vs	HTML, XHTML, Flash player
+Gorilla Glass 4Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
175 grams (6.13 ounces)	vs	+162 grams (5.67 ounces)8% Lighter
Li-Ion: lithium-ion (Non removable)	vs	+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily

13 Common items in both devices

16 million

Only digital zoom

PDAF: phase detection autofocus / Autofocus

Capacitive

Multitouch

Accelerometer

Ambient light sensor

+6 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
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
Change model
Model	Axon 7 (128GB)	Sidekick 4G (SGH-T839)
Other model names	ZTE Axon 7 Premium Dual-Sim A2017, A7G343	T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G
Country or region available	China, USA, Hong Kong, Taiwan	USA
Brand	ZTE	T-Mobile
Release date	5/1/2016	4/20/2011
Depth	7.9 millimeters (0.31 inches)	15 millimeters (0.59 inches)
Size (width x height)	75 x 151.7 millimeters (2.95 x 5.97 in)	61 x 127 millimeters (2.4 x 5 in)
Weight	175 grams (6.13 ounces)	162 grams (5.67 ounces)
Build, materials	feature not registered	feature not registered
Protection against water and others	Not supported	Not supported
📲 Display
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
Display type	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	1440x2560 pixels	480x800 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	534 PPI	267 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 4	Not supported
Refresh rate	feature not registered	feature not registered
Display features	feature not registered	feature not registered
🤖 Operating System
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
System version	Android 6.0.1 Marshmallow	Android 2.2.1 Froyo
Firmware update	feature not registered	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
Chipset	64bit: Qualcomm Snapdragon 820 MSM8996 (14nm)	32bit: Samsung Exynos 3
CPU	Quad-core, 2 processors: 2x 2.15GHz Kryo (Dual-core) 2x 1.6GHz Kryo (Dual-core)	Single-core, 1 processor: 1x 1GHz ARM Cortex-A8 (Single-core)
GPU graphical controller	Qualcomm Adreno 530	PowerVR SGX540
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
RAM memory	6GB LPDDR4	512MB
Internal storage	128GB (114GB available)	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
	ZTE Axon 7 (128GB)	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 800/1900, GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100	UMTS 1700/2100
Primary 4G network	LTE Cat6	Not supported
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, 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
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
Back camera (main camera)	20 megapixels	3.1 megapixels
Main camera resolution	5952x3348 pixels	2048x1536 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	VGA (720x480) 30 fps
Flash	Dual-LED flash	Not supported
Focal aperture	f/1.8 (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	PDAF: phase detection autofocus	Autofocus
Touch focus	Supported	feature not registered
Image stabilization	OIS: Optical 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 on both cameras	feature not registered
Camera extras	feature not registered	feature not registered
📸 Front camera
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
Front camera (secondary)	8 megapixels	0.3 megapixels
Front camera resolution	3264x2448 pixels	640x480 pixels
Video recording (secondary)	Full HD (1920x1080)	Not supported
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (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
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	feature not registered
Radio	Not supported	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263	MP4, H.264, H.263
Audio formats	MP3, WAV, eAAC+, FLAC	MP3, WAV, eAAC+
🔌 Connectivity
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
USB	USB 3.1 Type-C reversible connector	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/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 b/g/n [wifi4] (2.4GHz)
DLNA	Not supported	feature not registered
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging
NFC	Supported	Not supported
Infrared port	Not supported	feature not registered
🧭 Sensors
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Proximity sensor	Accelerometer Ambient light sensor Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	ZTE Axon 7 (128GB)	T-Mobile Sidekick 4G (SGH-T839)
Battery type	Li-Ion: lithium-ion (Non removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	3250 mAh	1500 mAh
Charger, watts	Wired charging	Wired charging
Inductive / wireless charging	feature not registered	feature not registered
Talk time autonomy	16 hours	6.5 hours
Standby	360 hours (15 days)	456 hours (19 days)
➕ Other features
	ZTE Axon 7 (128GB)	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	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: Gold • Aluminum body • MiFavor UI 4.0 • 2.5D glass screen • Quick Charge 3.0 • Fast battery charging: 83% in 30min • Slow motion 720p@240fps • Dolby Atmos audio • Miracast	• 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
	ZTE Axon 7 (128GB)	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