Comparison between:
- Cat S31
- Alcatel Pop 4
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Cat S31 | Alcatel Pop 4 | |
 |  | |
| Model alias | - | 5051D 5051J 5051M 5051X |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 74.42 mm 7.442 cm 0.244 ft 2.93 in | 71.4 mm 7.14 cm 0.234 ft 2.811 in |
| Height | 146 mm 14.6 cm 0.479 ft 5.748 in | 140.7 mm 14.07 cm 0.462 ft 5.539 in |
| Thickness | 12.6 mm 1.26 cm 0.041 ft 0.496 in | 7.99 mm 0.799 cm 0.026 ft 0.315 in |
| Weight | 200 g 0.44 lbs 7.05 oz | 134 g 0.3 lbs 4.73 oz |
| Volume | 136.9 cm³ 8.31 in³ | 80.27 cm³ 4.87 in³ |
| Colors | Black | Silver |
| Body materials | - | Plastic |
| Certification | IP68 MIL-STD-810G | - |
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 | Micro-SIM |
| Number of SIM cards | 1 | 1 |
| Features | Dual SIM optional (A variant of the model with two SIM card slots is available) | Dual SIM optional (A variant of the model with two SIM card slots is available) |
| - | 5051J - Dual SIM |
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 | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| UMTS | UMTS 850 MHz UMTS 900 MHz UMTS 1700/2100 MHz UMTS 1900 MHz UMTS 2100 MHz | UMTS 850 MHz UMTS 900 MHz UMTS 1900 MHz UMTS 2100 MHz |
| LTE | LTE 700 MHz Class 17 LTE 800 MHz LTE 850 MHz LTE 900 MHz LTE 1700/2100 MHz LTE 1800 MHz LTE 1900 MHz LTE 2100 MHz LTE 2600 MHz LTE 700 MHz (B12) | LTE 700 MHz Class 13 LTE 700 MHz Class 17 LTE 850 MHz LTE 1700/2100 MHz LTE 1800 MHz LTE 1900 MHz LTE 2600 MHz LTE 700 MHz (B28) |
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 | UMTS EDGE GPRS HSPA+ LTE Cat 4 | UMTS EDGE GPRS HSPA+ LTE Cat 4 |
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 7.1.2 Nougat | Android 6.0 Marshmallow |
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 210 MSM8909 | Qualcomm Snapdragon 210 MSM8909 |
| Process technology | 28 nm | 28 nm |
| CPU | ARM Cortex-A7 | ARM Cortex-A7 |
| CPU bits | 32 bit | 32 bit |
| Instruction set | ARMv7 | ARMv7 |
| Level 2 cache memory (L2) | 1024 KB 1 MB | 1024 KB 1 MB |
| CPU cores | 4 | 4 |
| CPU frequency | 1100 MHz | 1100 MHz |
| GPU | Qualcomm Adreno 304 | Qualcomm Adreno 304 |
| GPU frequency | 400 MHz | 400 MHz |
| RAM capacity | 2 GB | 1 GB |
| RAM channels | Single channel | Single channel |
| RAM frequency | 533 MHz | 533 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 16 GB | 8 GB |
Memory cards
Memory cards are used in mobile devices for expanding their external storage capacity.
| Types | microSD microSDHC microSDXC | microSD microSDHC |
Display
The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.
| Type/technology | TFT | IPS |
| Diagonal size | 4.7 in 119.38 mm 11.94 cm | 5 in 127 mm 12.7 cm |
| Width | 2.3 in 58.53 mm 5.85 cm | 2.45 in 62.26 mm 6.23 cm |
| Height | 4.1 in 104.05 mm 10.4 cm | 4.36 in 110.69 mm 11.07 cm |
| Aspect ratio | 1.778:1 16:9 | 1.778:1 16:9 |
| Resolution | 720 x 1280 pixels | 720 x 1280 pixels |
| Pixel density | 312 ppi 122 ppcm | 294 ppi 115 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 56.23 % | 68.83 % |
| Other features | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch |
| Corning Gorilla Glass 3 | Full Lamination Technology |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer Compass | Proximity Light Accelerometer Hall |
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 |
| Flash type | LED | LED |
| Image resolution | 3264 x 2448 pixels 7.99 MP | 3264 x 2448 pixels 7.99 MP |
| Video resolution | 1280 x 720 pixels 0.92 MP | 1280 x 720 pixels 0.92 MP |
| Video FPS | 30 fps | 30 fps |
| Features | Autofocus Continuous shooting Digital zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Scene mode | Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation 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.
| Field of view | - | 84.4 ° |
| Image resolution | 1600 x 1200 pixels 1.92 MP | 2560 x 1920 pixels 4.92 MP |
| Video resolution | 640 x 480 pixels 0.31 MP | - |
| Video FPS | 30 fps | - |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece | Loudspeaker Earpiece |
| - | HAC (M3/T3) - Hearing Aid Compatibility |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | Yes | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS GLONASS BeiDou | GPS A-GPS |
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 802.11n Wi-Fi Hotspot | 802.11b 802.11g 802.11n Wi-Fi Hotspot Wi-Fi Direct |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 4.1 | 4.0 |
| Features | A2DP | A2DP |
USB
The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.
| Connector type | Micro USB | Micro USB |
| Version | 2.0 | 2.0 |
| Features | Charging Mass storage On-The-Go | 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 |
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 AAC+ AMR AMR-WB 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 H.263 H.264 H.265 MKV VP8 VP9 | 3GPP AVI MPEG-4 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 | 4000 mAh | 2500 mAh |
| Type | Li-Ion | Li-Ion |
| Features | Non-removable | Removable |
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.
| Head SAR (EU) | - | 0.901 W/kg |
| Body SAR (EU) | - | 0.83 W/kg |
| Head SAR (USA) | 1.14 W/kg | - |
| Body SAR (USA) | 1.19 W/kg | - |
| Cat S31 | Alcatel Pop 4 |