Comparison between:
- Amazon Fire 7 (2017)
- Amazon Fire 7 Kids (2022)
- Samsung Galaxy Tab 4 7.0
- Amazon Fire HD 8 (2018)
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Amazon Fire 7 (2017) | Amazon Fire 7 Kids (2022) | Samsung Galaxy Tab 4 7.0 | Amazon Fire HD 8 (2018) | |
 |  |  |  | |
| Model alias | - | Fire 7 Kids 9th Gen | SM-T230 | - |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 192 mm 19.2 cm 0.63 ft 7.559 in | 200.66 mm 20.066 cm 0.658 ft 7.9 in | 186.9 mm 18.69 cm 0.613 ft 7.358 in | 214 mm 21.4 cm 0.702 ft 8.425 in |
| Height | 115 mm 11.5 cm 0.377 ft 4.528 in | 162.56 mm 16.256 cm 0.533 ft 6.4 in | 107.9 mm 10.79 cm 0.354 ft 4.248 in | 128 mm 12.8 cm 0.42 ft 5.039 in |
| Thickness | 9.6 mm 0.96 cm 0.031 ft 0.378 in | 27.94 mm 2.794 cm 0.092 ft 1.1 in | 9 mm 0.9 cm 0.03 ft 0.354 in | 9.2 mm 0.92 cm 0.03 ft 0.362 in |
| Weight | 295 g 0.65 lbs 10.41 oz | 429 g 0.95 lbs 15.13 oz | 276 g 0.61 lbs 9.74 oz | 341 g 0.75 lbs 12.03 oz |
| Volume | 211.97 cm³ 12.87 in³ | 911.38 cm³ 55.35 in³ | 181.5 cm³ 11.02 in³ | 252.01 cm³ 15.3 in³ |
| Colors | Black Yellow Blue Red | Blue Purple Red | Black White | Black Blue Red Yellow |
| Body materials | - | Plastic | - | Plastic |
Operating system
Operating system is the system software, which manages and controls the functioning of the hardware components of the device.
| Operating system (OS) | Fire OS 5.3.3 (Android 5.1.1 Lollipop) | Fire OS | Android 4.4.2 KitKat | Fire OS (Android) |
| User interface (UI) | - | - | TouchWiz Nature UX | - |
System on Chip (SoC)
A system on a chip (SoC) includes into a single chip some of the main hardware components of the mobile device.
| SoC | MediaTek MT8127M | MediaTek MT8168 | Marvell PXA1088 | MediaTek MT8163V/B |
| Process technology | 28 nm | 28 nm | 40 nm | 28 nm |
| CPU | 4x 1.3 GHz ARM Cortex-A7 | 4x 2.0 GHz ARM Cortex-A53 | 4x 1.2 GHz ARM Cortex-A7 | 4x 1.3 GHz ARM Cortex-A53 |
| CPU bits | 32 bit | 64 bit | 32 bit | 64 bit |
| Instruction set | ARMv7-A | ARMv8-A | ARMv7-A | ARMv8-A |
| Level 1 cache memory (L1) | 32 KB + 32 KB | - | - | - |
| Level 2 cache memory (L2) | 512 KB 0.5 MB | - | - | - |
| CPU cores | 4 | 4 | 4 | 4 |
| CPU frequency | 1300 MHz | 2000 MHz | 1200 MHz | 1300 MHz |
| GPU | ARM Mali-450 MP4 | ARM Mali-G52 MC1 | Vivante GC1000 | ARM Mali-T720 MP2 |
| GPU cores | 4 | 1 | 2 | 2 |
| GPU frequency | 600 MHz | - | 600 MHz | 520 MHz |
| RAM capacity | 1 GB | 2 GB | 1.5 GB | 1.5 GB |
| RAM type | LPDDR3 | LPDDR4X | LPDDR2 | LPDDR3 |
| RAM channels | Single channel | Double channel | - | Single channel |
| RAM frequency | 666 MHz | 1600 MHz | - | 800 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 8 GB 16 GB | 16 GB 32 GB | 8 GB 16 GB | 16 GB 32 GB |
Memory cards
Memory cards are used in mobile devices for expanding their external storage capacity.
| Types | microSD microSDHC microSDXC | microSD microSDHC microSDXC | microSD microSDHC | microSD microSDHC microSDXC |
Display
The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.
| Type/technology | IPS | IPS | TFT | IPS |
| Diagonal size | 7 in 177.8 mm 17.78 cm | 7 in 177.8 mm 17.78 cm | 7 in 177.8 mm 17.78 cm | 8 in 203.2 mm 20.32 cm |
| Width | 6.04 in 153.41 mm 15.34 cm | 6.04 in 153.41 mm 15.34 cm | 5.94 in 150.77 mm 15.08 cm | 6.78 in 172.31 mm 17.23 cm |
| Height | 3.54 in 89.89 mm 8.99 cm | 3.54 in 89.89 mm 8.99 cm | 3.71 in 94.23 mm 9.42 cm | 4.24 in 107.7 mm 10.77 cm |
| Aspect ratio | 1.707:1 | 1.707:1 | 1.6:1 16:10 | 1.6:1 16:10 |
| Resolution | 1024 x 600 pixels | 1024 x 600 pixels | 1280 x 800 pixels | 1280 x 800 pixels |
| Pixel density | 170 ppi 66 ppcm | 170 ppi 66 ppcm | 216 ppi 84 ppcm | 189 ppi 74 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 62.65 % | 42.41 % | 70.68 % | 67.97 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Accelerometer | Accelerometer | Accelerometer | Light Accelerometer |
Rear camera
The primary camera of the mobile device is usually placed on its back and can be combined with one or more additional cameras.
| Sensor type | CMOS | CMOS | - | CMOS |
| Image resolution | 1600 x 1200 pixels 1.92 MP | 1600 x 1200 pixels 1.92 MP | 2048 x 1536 pixels 3.15 MP | 1600 x 1200 pixels 1.92 MP |
| Video resolution | 1280 x 720 pixels 0.92 MP | 1280 x 720 pixels 0.92 MP | 1280 x 720 pixels 0.92 MP | 1280 x 720 pixels 0.92 MP |
| Video FPS | 30 fps | 30 fps | 30 fps | 30 fps |
| Features | Digital zoom Self-timer | Digital zoom Self-timer | Geotagging Panorama White balance settings Exposure compensation Self-timer Scene mode | Digital zoom Self-timer |
Front camera
Modern smartphones have one or more front cameras and their positioning has led to various design concepts – pop-up camera, rotating camera, notch, punch hole, under-display camera, etc.
| Image resolution | 640 x 480 pixels 0.31 MP | 1600 x 1200 pixels 1.92 MP | - | 1600 x 1200 pixels 1.92 MP |
| Video resolution | 640 x 480 pixels 0.31 MP | 1280 x 720 pixels 0.92 MP | 1280 x 720 pixels 0.92 MP | 640 x 480 pixels 0.31 MP |
| Video FPS | 30 fps | 30 fps | 30 fps | 30 fps |
| - | - | 1.3 MP | - |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker | Loudspeaker | Loudspeaker | Loudspeaker Stereo speakers |
| - | - | - | Dolby Atmos |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | No | No | No | No |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | - | - | GPS A-GPS GLONASS | - |
Wi-Fi
Wi-Fi is a technology that provides wireless data connections between various devices within a short range.
| Wi-Fi | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz Dual band | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz 802.11ac Dual band | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz Dual band Wi-Fi Direct | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz Dual band |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 4.1 | 4.2 | 4.0 | 4.0 |
| Features | A2DP LE | A2DP LE | A2DP AVRCP DIP HID HSP OPP PAN | A2DP LE |
USB
The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.
| Connector type | Micro USB | USB Type-C | Micro USB | Micro USB |
| Version | 2.0 | 2.0 | 2.0 | 2.0 |
| Features | Charging Mass storage | Charging Mass storage | Charging Mass storage | Charging Mass storage |
Headphone jack
The headphone jack is an audio phone connector, a.k.a. an audio jack. The most widely used one in mobile devices is the 3.5 mm headphone jack.
| Headphone jack | Yes | Yes | Yes | Yes |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Tethering | Computer sync OTA sync Tethering | Computer sync OTA sync | Computer sync OTA sync Tethering |
Browser
A web browser is a software application for accessing, fetching, displaying and navigating through information on the World Wide Web.
| Browser | HTML HTML5 CSS 3 | HTML HTML5 CSS 3 | HTML HTML5 CSS 3 | HTML HTML5 CSS 3 |
Audio file formats/codecs
Mobile devices support various audio file formats and codecs, which respectively store and code/decode digital audio data.
| Audio file formats/codecs | AAC AAC+ AMR AMR-WB eAAC+ MIDI MP3 OGG WMA WAV | AAC AAC+ AMR AMR-WB eAAC+ MIDI MP3 OGG WMA WAV | AAC AAC+ AMR AMR-WB eAAC+ FLAC MP3 OGG WMA WAV | AAC AAC+ AC3 AMR AMR-WB eAAC+ MIDI MP3 OGG WMA WAV |
Video file formats/codecs
Mobile devices support various video file formats and codecs, which respectively store and code/decode digital video data.
| Video file formats/codecs | 3GPP AVI MKV MP4 VP8 WebM WMV Xvid | 3GPP AVI MKV MP4 VP8 WebM WMV Xvid | DivX H.263 H.264 MP4 VC-1 VP8 WMV WMV7 WMV8 Xvid | 3GPP AVI MKV MP4 VP8 WebM WMV Xvid |
Battery
The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.
| Capacity | 2980 mAh | - | 4000 mAh | 4750 mAh |
| Type | Li-Polymer | Li-Polymer | Li-Polymer | Li-Polymer |
| Charger output power | - | 5 V / 1 A | - | 5 V / 1 A |
| Features | Non-removable | Non-removable | Non-removable | Non-removable |
| Battery life - up to 7 h | - | - | Battery life - up to 10 h |
Specific Absorption Rate (SAR)
The SAR rating shows the amount of electromagnetic radiation absorbed by the human body when using a mobile device, expressed in W/kg.
| Body SAR (EU) | - | - | 0.381 W/kg | - |
| Body SAR (USA) | - | - | 1.1 W/kg | - |
Additional features
Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.
| Additional features | - | Kid-Proof Case with built-in stand 1-year Amazon Kids+ content Parent Dashboard | - | - |
| Amazon Fire 7 (2017) | Amazon Fire 7 Kids (2022) | Samsung Galaxy Tab 4 7.0 | Amazon Fire HD 8 (2018) |