Amazon Fire HDX 8.9 2014 (WiFi 16GB) vs T-Mobile Sidekick 4G (SGH-T839)
Side by side comparison between Amazon Fire HDX 8.9 (2014) vs T-Mobile Sidekick 4G devices, differences, pros, cons and full specifications. What's the better?
,
8.9"
IPS
IPS
2560x1600
8
MP
MP
1.2mp
2GB
RAM
RAM
Quad-core
6000
mAh
mAh
(Non removable)
vs
3.5"
TFT
TFT
480x800
3.1
MP
MP
0.3mp
512MB
RAM
RAM
Single-core
1500
mAh
mAh
(Removable)
What's the better device? Amazon Fire HDX 8.9 2014 (WiFi 16GB)
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!
19 Advantages 
7 Advantages | 9 Common items in both devices |
| 16 million |
| Only digital zoom |
| Autofocus |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| +2 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 | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| Model | Fire HDX 8.9 2014 (WiFi 16GB) | Sidekick 4G (SGH-T839) |
| Other model names | Amazon Fire HDX 8.9 WiFi, Amazon Kindle Fire HDX 8.9 2014 | T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G |
| Country or region available | feature not registered |  USA |
| Brand | Amazon | T-Mobile |
| Release date | 10/21/2014 | 4/20/2011 |
| Depth | 7.8 millimeters (0.31 inches) | 15 millimeters (0.59 inches) |
| Size (width x height) | 158 x 231 millimeters (6.22 x 9.09 in) | 61 x 127 millimeters (2.4 x 5 in) |
| Weight | 375 grams (13.13 ounces) | 162 grams (5.67 ounces) |
| Build, materials | feature not registered | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| Display type | TFT IPS LCD | TFT LCD |
| Screen size | 8.9" inches | 3.5" inches |
| Screen-to-body ratio | ~62.9% (screen-to-body ratio) | ~45% (screen-to-body ratio) |
| Display resolution | 2560x1600 pixels | 480x800 pixels |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 339 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 | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| System version | Android 4.4.2 KitKat | Android 2.2.1 Froyo |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| Chipset | 32bit: Qualcomm Snapdragon 805 APQ8084 | 32bit: Samsung Exynos 3 |
| CPU | Quad-core, 1 processor: 4x 2.5GHz Krait 450 (Quad-core) | Single-core, 1 processor: 1x 1GHz ARM Cortex-A8 (Single-core) |
| GPU graphical controller | Qualcomm Adreno 420 Blaze | PowerVR SGX540 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| RAM memory | 2GB LPDDR3 | 512MB |
| Internal storage | 16GB (10GB available) | 1GB (350MB available) |
| External storage | Not supported | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | Not supported | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | feature not registered | 21/5.76 Mbps |
| Network technology | feature not registered | 2G, 3G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Not supported | Quad-Band 850/900/1800/1900 |
| Primary 2G network | Not supported | GSM 850/900/1800/1900 |
| Primary 3G network | Not supported | UMTS 1700/2100 |
| Primary 4G network | Not supported | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | Not supported | 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 | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| Back camera (main camera) | 8 megapixels | 3.1 megapixels |
| Main camera resolution | 3264x2448 pixels | 2048x1536 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | VGA (720x480) 30 fps |
| Flash | LED flash | 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 |
| Autofocus | Autofocus | Autofocus |
| Touch focus | Supported | feature not registered |
| Image stabilization | feature not registered | feature not registered |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face 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 | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| Front camera (secondary) | 1.2 megapixels | 0.3 megapixels |
| Front camera resolution | 1280x960 pixels | 640x480 pixels |
| Video recording (secondary) | HD (1280x720) | 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 | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | 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+, AC3 | MP3, WAV, eAAC+ |
🔌 Connectivity | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Micro-B USB SlimPort | Not supported |
| Bluetooth | 4.1 + A2DP | 3.0 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | Supported | feature not registered |
| GPS | Not supported | A-GPS, GeoTagging |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | feature not registered |
🧭 Sensors | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| Sensors | Accelerometer Ambient light sensor Gyroscope | Accelerometer Ambient light sensor Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 6000 mAh | 1500 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | 14 hours | 6.5 hours |
| Standby | feature not registered | 456 hours (19 days) |
➕ Other features | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | T-Mobile Sidekick 4G (SGH-T839) | |
| Call control | Not supported | Voice recorder |
| Messaging | E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | feature not registered | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, Flash player |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Wireless external keyboard | Retractable QWERTY keyboard |
| Miscellaneous | • Colors: Black • Fire OS 4 Sangria UI • Amazon Appstore • Amazon Silk • Dolby Atmos audio • Free cloud storage for all Amazon content • Text-to-Speech english-language content reader | • 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 | ||
| Amazon Fire HDX 8.9 2014 (WiFi 16GB) | 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 |