Comparison between:
- Asus ZenPad Z8
- Lenovo Tab 4 8
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Asus ZenPad Z8 | Lenovo Tab 4 8 | |
 |  Prices | |
| Model alias | ZT581KL | TB-8504F TB-8504N TB-8504X |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 205.2 mm 20.52 cm 0.673 ft 8.079 in | 211 mm 21.1 cm 0.692 ft 8.307 in |
| Height | 136.4 mm 13.64 cm 0.448 ft 5.37 in | 124 mm 12.4 cm 0.407 ft 4.882 in |
| Thickness | 7.62 mm 0.762 cm 0.025 ft 0.3 in | 8.3 mm 0.83 cm 0.027 ft 0.327 in |
| Weight | 310 g 0.68 lbs 10.93 oz | 320 g 0.71 lbs 11.29 oz |
| Volume | 213.28 cm³ 12.95 in³ | 217.16 cm³ 13.19 in³ |
| Colors | Black | Black White |
| Body materials | - | Plastic |
SIM card
The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.
| SIM card type | Micro-SIM | Micro-SIM |
| Number of SIM cards | 1 | 1 |
| - | TB-8504F - Wi-Fi |
Networks
A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other.
| GSM | - | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| CDMA | - | CDMA 800 MHz |
| TD-SCDMA | - | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz |
| UMTS | - | UMTS 850 MHz UMTS 900 MHz UMTS 1900 MHz UMTS 2100 MHz |
| LTE | LTE 700 MHz Class 13 LTE 1700/2100 MHz LTE 1900 MHz | LTE 800 MHz LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz LTE-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) |
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 | LTE Cat 4 | UMTS EDGE GPRS HSPA+ LTE Cat 4 EV-DO Rev. A TD-SCDMA TD-HSDPA |
Operating system
Operating system is the system software, which manages and controls the functioning of the hardware components of the device.
| Operating system (OS) | Android 6.0.1 Marshmallow | Android 7.0 Nougat |
| User interface (UI) | ZenUI | - |
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 | Qualcomm Snapdragon 650 MSM8956 | Qualcomm Snapdragon 425 MSM8917 |
| Process technology | 28 nm | 28 nm |
| CPU | 2x 1.8 GHz ARM Cortex-A72, 4x 1.2 GHz ARM Cortex-A53 | ARM Cortex-A53 |
| CPU bits | 64 bit | 64 bit |
| Instruction set | ARMv8 | ARMv8 |
| CPU cores | 6 | 4 |
| CPU frequency | 1800 MHz | 1400 MHz |
| GPU | Qualcomm Adreno 510 | Qualcomm Adreno 308 |
| GPU frequency | 550 MHz | 500 MHz |
| RAM capacity | 2 GB | 2 GB |
| RAM type | LPDDR3 | LPDDR3 |
| RAM channels | Single channel | Single channel |
| RAM frequency | 933 MHz | 667 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 16 GB | 16 GB 32 GB |
| eMMC | - |
Memory cards
Memory cards are used in mobile devices for expanding their external storage capacity.
| Types | microSD microSDHC microSDXC | 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 |
| Diagonal size | 7.9 in 200.66 mm 20.07 cm | 8 in 203.2 mm 20.32 cm |
| Width | 6.32 in 160.53 mm 16.05 cm | 6.78 in 172.31 mm 17.23 cm |
| Height | 4.74 in 120.4 mm 12.04 cm | 4.24 in 107.7 mm 10.77 cm |
| Aspect ratio | 1.333:1 4:3 | 1.6:1 16:10 |
| Resolution | 2048 x 1536 pixels | 1280 x 800 pixels |
| Pixel density | 324 ppi 127 ppcm | 189 ppi 74 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 69.27 % | 71.16 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch |
| Viewing angle - 178° | 350 cd/m² 60% NTSC |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer Compass Gyroscope Hall | Proximity 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 |
| Aperture | - | f/2 |
| Focal length and 35 mm equivalent | - | 2.83 mm |
| Image resolution | 3264 x 2448 pixels 7.99 MP | 2592 x 1944 pixels 5.04 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 fps | 30 fps |
| Features | Continuous shooting Digital zoom Digital image stabilization Geotagging Panorama HDR Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode | Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode |
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.
| Aperture | - | f/2.4 |
| Focal length and 35 mm equivalent | - | 2.54 mm |
| Image resolution | 1600 x 1200 pixels 1.92 MP | 1600 x 1200 pixels 1.92 MP |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Stereo speakers | Loudspeaker Stereo speakers |
| DTS-HD | Dolby Atmos |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | No | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS GLONASS | GPS A-GPS GLONASS BeiDou |
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 802.11ac Wi-Fi Hotspot Wi-Fi Display | 802.11b 802.11g 802.11n Wi-Fi Hotspot |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 4.1 | 4.2 |
| Features | A2DP | A2DP EDR |
USB
The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.
| Connector type | USB Type-C | Micro USB |
| Version | 2.0 | 2.0 |
| Features | Charging Mass storage | 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 | Yes | Yes |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | 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 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 aptX eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AMR eAAC+ FLAC 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 DivX Flash Video QuickTime MP4 WebM WMV Xvid | 3GPP AVI H.263 H.264 MKV MP4 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 | 4680 mAh | 4850 mAh |
| Type | Li-Polymer | Li-Polymer |
| Charger output power | - | 5 V / 1 A |
| Features | Non-removable | Non-removable |
| Battery life - up to 13 h Stand by time - up to 550 h | Battery life - up to 20 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 (USA) | 1.05 W/kg | - |
| Asus ZenPad Z8 | Lenovo Tab 4 8 |