Comparison between:
- Amazon Kindle Paperwhite (2013)
- Amazon Kindle Paperwhite
- Alldocube iPlay 50 mini
- Xiaomi Mi Pad 2
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Amazon Kindle Paperwhite (2013) | Amazon Kindle Paperwhite | Alldocube iPlay 50 mini | Xiaomi Mi Pad 2 | |
 |  |  |  | |
| Model alias | Wi-Fi 3G+Wi-Fi | EY21 | iPlay 50 mini NFE | MiPad 2 Millet flat 2 |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 117 mm 11.7 cm 0.384 ft 4.606 in | 117 mm 11.7 cm 0.384 ft 4.606 in | 202.7 mm 20.27 cm 0.665 ft 7.98 in | 200.4 mm 20.04 cm 0.657 ft 7.89 in |
| Height | 169 mm 16.9 cm 0.554 ft 6.654 in | 169 mm 16.9 cm 0.554 ft 6.654 in | 126 mm 12.6 cm 0.413 ft 4.961 in | 132.6 mm 13.26 cm 0.435 ft 5.22 in |
| Thickness | 9.1 mm 0.91 cm 0.03 ft 0.358 in | 9.1 mm 0.91 cm 0.03 ft 0.358 in | 7.5 mm 0.75 cm 0.025 ft 0.295 in | 6.95 mm 0.695 cm 0.023 ft 0.274 in |
| Weight | 206 g 0.45 lbs 7.27 oz | 213 g 0.47 lbs 7.51 oz | 292 g 0.64 lbs 10.3 oz | 322 g 0.71 lbs 11.36 oz |
| Volume | 179.93 cm³ 10.93 in³ | 179.93 cm³ 10.93 in³ | 191.55 cm³ 11.63 in³ | 184.68 cm³ 11.22 in³ |
| Colors | Black | Black | Gray | Silver Gold |
| Body materials | Plastic | Plastic | Metal Plastic | Aluminium alloy |
SIM card
The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.
| SIM card type | - | - | Nano-SIM / microSD Micro-SIM | - |
| Number of SIM cards | - | - | 2 | - |
| Features | - | - | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) | - |
Networks
A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other.
| GSM | - | - | GSМ 850 МНz (В5) GSМ 900 МНz (В8) GSМ 1900 МНz (В2) | - |
| UMTS | - | - | UМТS 900 МНz (В8) UМТS 1900 МНz (В2) UМТS 2100 МНz (В1) | - |
| LTE | - | - | LТЕ-FDD 700 МНz (В28) LТЕ-FDD 800 МНz (В20) LТЕ-FDD 850 МНz (В5) LТЕ-FDD 900 МНz (В8) LТЕ-FDD 1800 МНz (В3) LТЕ-FDD 2100 МНz (В1) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2600 МНz (В38) | - |
Mobile network technologies and bandwidth
Communication between devices within mobile networks is realized via various generations of network technologies, which provide different bandwidth.
| Mobile network technologies | - | - | UМТS GРRS LТЕ | - |
Operating system
Operating system is the system software, which manages and controls the functioning of the hardware components of the device.
| Operating system (OS) | - | - | Аndrоid 13 | МΙUΙ V7 (Аndrоid 5.0.2 Lоlliрор) МΙUΙ V7.2 (Аndrоid 5.1 Lоlliрор) Мiсrоsоft Windоws 10 /орtiоnаl/ МΙUΙ V9 |
| User interface (UI) | - | - | Cube OS | - |
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 | Frееsсаlе i.МХ508 | Frееsсаlе i.МХ508 | Unisос Тigеr Т606 | Ιntеl Аtоm х5-Ζ8500 |
| Process technology | 65 nm | 65 nm | 12 nm | 14 nm |
| CPU | 1х 1.0 GНz АRМ Соrtех-А8 | 1х 0.8 GНz АRМ Соrtех-А8 | 2х 1.6 GНz АRМ Соrtех-А75, 6х 1.6 GНz АRМ Соrtех-А55 | Ιntеl Сhеrry Тrаil |
| CPU bits | 64 bit | 64 bit | 64 bit | 64 bit |
| Instruction set | ARMv8 | ARMv8 | ARMv8.2-A | IA-32 (x86), IA-64 (x64) |
| Level 1 cache memory (L1) | 16 KB + 16 KB | 16 KB + 16 KB | 16 KB + 16 KB | 16 KB + 16 KB |
| Level 2 cache memory (L2) | 256 KB 0.25 MB | 256 KB 0.25 MB | - | 2048 KB 2 MB |
| CPU cores | 1 | 1 | 8 | 4 |
| CPU frequency | 1000 MHz | 800 MHz | 1600 MHz | 2240 MHz |
| GPU | - | - | ARM Mali-G57 MP1 | Intel HD Graphics |
| GPU cores | - | - | 1 | - |
| GPU frequency | - | - | 650 MHz | 600 MHz |
| RAM capacity | 256 MB | 256 MB | 4 GB | 2 GB |
| RAM type | - | - | LPDDR4X | LPDDR3 |
| RAM channels | - | - | Double channel | - |
| RAM frequency | - | - | 1733 MHz | 1500 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 2 GB 4 GB | 2 GB | 64 GB | 16 GB 64 GB |
| - | - | UFS 2.0 | eMMC 4.5 |
Memory cards
Memory cards are used in mobile devices for expanding their external storage capacity.
| Types | - | - | 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 | E Ink Carta | E Ink | IPS | IPS |
| Diagonal size | 6 in 152.4 mm 15.24 cm | 6 in 152.4 mm 15.24 cm | 8.4 in 213.36 mm 21.34 cm | 7.9 in 200.66 mm 20.07 cm |
| Width | 2.46 in 62.54 mm 6.25 cm | 2.94 in 74.72 mm 7.47 cm | 3.6 in 91.34 mm 9.13 cm | 3.87 in 98.38 mm 9.84 cm |
| Height | 5.47 in 138.98 mm 13.9 cm | 5.23 in 132.83 mm 13.28 cm | 7.59 in 192.82 mm 19.28 cm | 6.89 in 174.89 mm 17.49 cm |
| Aspect ratio | 2.222:1 | 1.778:1 16:9 | 2.111:1 | 1.778:1 16:9 |
| Resolution | 1080 x 2400 pixels | 1080 x 1920 pixels | 720 x 1520 pixels | 1080 x 1920 pixels |
| Pixel density | 439 ppi 172 ppcm | 367 ppi 144 ppcm | 200 ppi 78 ppcm | 279 ppi 109 ppcm |
| Color depth | - | - | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 44.1 % | 50.35 % | 69.18 % | 64.96 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch |
| Built in front light Light control - dim only Screen shades - 16 | Built in front light Light control - dim only Screen shades - 16 | In-cell 320 cd/㎡ | Full Lamination Technology |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | - | - | Accelerometer Gravity | Light Accelerometer Compass Gyroscope |
Main rear camera
The main 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 |
| ISO | - | - | - | 100 - 4000 |
| Aperture | - | - | - | f/2 |
| Shutter speed | - | - | - | 5 - 1/2000 |
| Focal length and 35 mm equivalent | - | - | - | 3 mm |
| Image resolution | - | - | 2560 x 1944 pixels 4.98 MP | 3264 x 2448 pixels 7.99 MP |
| Video resolution | - | - | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | - | - | 30 fps | 30 fps |
| Features | - | - | Autofocus Digital zoom Geotagging Panorama HDR Face detection | Digital zoom Face detection 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.
| Sensor type | - | - | CMOS | - |
| Aperture | - | - | - | f/2 |
| Field of view | - | - | - | 75 ° |
| Image resolution | - | - | 2560 x 1944 pixels 4.98 MP | 2560 x 1920 pixels 4.92 MP |
| Video resolution | - | - | 1920 x 1080 pixels 2.07 MP | 1280 x 720 pixels 0.92 MP |
| Video FPS | - | - | 30 fps | 30 fps |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | - | - | Loudspeaker Earpiece | Loudspeaker |
| - | - | - | Smart PA |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | - | - | Yes | No |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GРS А-GРS | GРS А-GРS | GРS А-GРS GLОΝАSS | GРS А-GРS |
Wi-Fi
Wi-Fi is a technology that provides wireless data connections between various devices within a short range.
| Wi-Fi | 802.11b 802.11g 802.11а | 802.11b 802.11g 802.11а | 802.11а 802.11b 802.11g Wi-Fi Disрlаy 802.11а 802.11ас 5GНz 802.11аd | 802.11а 802.11b 802.11g Wi-Fi Disрlаy 802.11а |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | - | - | 5.0 | 4.2 |
| Features | - | - | A2DP | A2DP HID |
USB
The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.
| Connector type | Micro USB | Micro USB | USB Type-C | Micro USB |
| Version | 2.0 | 2.0 | 2.0 | 2.0 |
| Features | Charging Mass storage | Charging Mass storage | Charging Mass storage On-The-Go | Charging Mass storage On-The-Go |
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 | No | No | Yes | Yes |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync | Computer sync | Computer sync OTA sync Tethering | 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 | HTML HTML5 | 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 AMR eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AAC+ AMR AMR-WB eAAC+ FLAC MIDI MP3 OGG WMA WAV DSD APE |
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 H.263 H.264 MKV MP4 WebM WMV Xvid | 3GPP AVI H.263 H.264 H.265 MKV MP4 VC-1 VP9 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 | 1420 mAh | 1420 mAh | 4000 mAh | 6190 mAh |
| Type | Li-Polymer | Li-Polymer | Li-Polymer | Li-Polymer |
| Charger output power | - | - | 5 V / 2 A | 5 V / 2 A |
| Features | Non-removable | Non-removable | Fast charging Non-removable | Fast charging Non-removable |
| Battery life - up to 1340 h | Battery life - up to 1340 h | - | Battery life - up to 12 h |
Additional features
Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.
| Additional features | Stylus Supported file formats - Kindle Format 8 (AZW3); Kindle (AZW); TXT; PDF; unprotected MOBI; PRC natively; DOC; DOCX; JPEG | Stylus Supported file formats - Kindle Format 8 (AZW3); Kindle (AZW); TXT; PDF; unprotected MOBI; PRC natively; DOC; DOCX; JPEG | NFE - Widevine L1 certification | - |
| Amazon Kindle Paperwhite (2013) | Amazon Kindle Paperwhite | Alldocube iPlay 50 mini | Xiaomi Mi Pad 2 |
