Comparison between:
- Gretel A7
- Mlais MX69
- Gretel A9
- Gretel A6
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Gretel A7 | Mlais MX69 | Gretel A9 | Gretel A6 | |
 |  |  |  |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 66.9 mm 6.69 cm 0.219 ft 2.634 in | 79.5 mm 7.95 cm 0.261 ft 3.13 in | 72.8 mm 7.28 cm 0.239 ft 2.866 in | 77.5 mm 7.75 cm 0.254 ft 3.051 in |
| Height | 139.6 mm 13.96 cm 0.458 ft 5.496 in | 155 mm 15.5 cm 0.509 ft 6.102 in | 146.6 mm 14.66 cm 0.481 ft 5.772 in | 152.4 mm 15.24 cm 0.5 ft 6 in |
| Thickness | 9.4 mm 0.94 cm 0.031 ft 0.37 in | 7.9 mm 0.79 cm 0.026 ft 0.311 in | 8.7 mm 0.87 cm 0.029 ft 0.343 in | 8.5 mm 0.85 cm 0.028 ft 0.335 in |
| Weight | 127 g 0.28 lbs 4.48 oz | 175 g 0.39 lbs 6.17 oz | 164 g 0.36 lbs 5.78 oz | 192 g 0.42 lbs 6.79 oz |
| Volume | 87.79 cm³ 5.33 in³ | 97.35 cm³ 5.91 in³ | 92.85 cm³ 5.64 in³ | 100.39 cm³ 6.1 in³ |
| Colors | Yellow Orange Black White Silver | - | Black Rose-gold | Black Gold |
| Body materials | 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 | Micro-SIM | - | Micro-SIM / microSD Nano-SIM | Micro-SIM Nano-SIM / microSD |
| Number of SIM cards | 2 | 2 | 2 | 2 |
| Features | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) | 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 | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| W-CDMA | W-CDMA 900 MHz W-CDMA 2100 MHz | W-CDMA 850 MHz W-CDMA 900 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz | W-CDMA 900 MHz W-CDMA 2100 MHz | W-CDMA 900 MHz W-CDMA 2100 MHz |
| LTE | - | - | LTE 800 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz LTE-TDD 2300 MHz (B40) | LTE 800 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz |
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+ | UMTS EDGE GPRS HSPA+ | 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 6.0 Marshmallow | Android 4.2 Jelly Bean | Freeme OS (Android 6.0.1 Marshmallow) Android 7.0 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 | MediaTek MT6580 | MediaTek MT6589T | MediaTek MT6737V | MediaTek MT6737 |
| Process technology | 28 nm | 28 nm | 28 nm | 28 nm |
| CPU | 4x 1.3 GHz ARM Cortex-A7 | 4x 1.5 GHz ARM Cortex-A7 | 4x 1.25 GHz ARM Cortex-A53 | 4x 1.3 GHz ARM Cortex-A53 |
| CPU bits | 32 bit | 32 bit | 64 bit | 64 bit |
| Instruction set | ARMv7-A | ARMv7-A | ARMv8-A | ARMv8-A |
| Level 1 cache memory (L1) | 32 KB + 32 KB | 32 KB + 32 KB | 32 KB + 32 KB | 32 KB + 32 KB |
| Level 2 cache memory (L2) | 512 KB 0.5 MB | 1024 KB 1 MB | 512 KB 0.5 MB | 512 KB 0.5 MB |
| CPU cores | 4 | 4 | 4 | 4 |
| CPU frequency | 1300 MHz | 1500 MHz | 1250 MHz | 1300 MHz |
| GPU | ARM Mali-400 MP1 | IMG PowerVR SGX544 MP | ARM Mali-T720 MP2 | ARM Mali-T720 MP2 |
| GPU cores | 1 | 1 | 2 | 2 |
| GPU frequency | 500 MHz | 357 MHz | 550 MHz | 550 MHz |
| RAM capacity | 1 GB | 1 GB | 2 GB | 2 GB |
| RAM type | LPDDR2/LPDDR3 | LPDDR2 | LPDDR3 | LPDDR3 |
| RAM channels | Single channel | Single channel | Single channel | Single channel |
| RAM frequency | 533 MHz | 533 MHz | 640 MHz | 640 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 16 GB | 16 GB | 16 GB | 16 GB |
| - | - | eMMC | eMMC |
Memory cards
Memory cards are used in mobile devices for expanding their external storage capacity.
| Types | microSD microSDHC | microSD microSDHC microSDXC | 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 | JDI IPS | IPS | IPS | IPS |
| Diagonal size | 4.7 in 119.38 mm 11.94 cm | 5.7 in 144.78 mm 14.48 cm | 5 in 127 mm 12.7 cm | 5.5 in 139.7 mm 13.97 cm |
| Width | 2.3 in 58.53 mm 5.85 cm | 2.79 in 70.98 mm 7.1 cm | 2.45 in 62.26 mm 6.23 cm | 2.7 in 68.49 mm 6.85 cm |
| Height | 4.1 in 104.05 mm 10.4 cm | 4.97 in 126.19 mm 12.62 cm | 4.36 in 110.69 mm 11.07 cm | 4.79 in 121.76 mm 12.18 cm |
| Aspect ratio | 1.778:1 16:9 | 1.778:1 16:9 | 1.778:1 16:9 | 1.778:1 16:9 |
| Resolution | 720 x 1280 pixels | 1080 x 1920 pixels | 720 x 1280 pixels | 720 x 1280 pixels |
| Pixel density | 312 ppi 122 ppcm | 386 ppi 151 ppcm | 294 ppi 115 ppcm | 267 ppi 104 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 65.42 % | 72.92 % | 64.79 % | 70.83 % |
| Other features | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch |
| Display manufacturer - Japan Display Inc. Corning Gorilla Glass | OGS (One Glass Solution) Full Lamination Technology | - | Display manufacturer - Sharp 2.5D curved glass screen |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer | Proximity Light Accelerometer Gravity | Proximity Light Accelerometer Fingerprint | Proximity Light Accelerometer Fingerprint |
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 model | Samsung S5K3H7 | - | Samsung S5K3H7 | - |
| Sensor type | CMOS BSI | CMOS | CMOS BSI | CMOS BSI |
| Sensor size | 4.54 x 3.42 mm 0.22 in | - | 4.54 x 3.42 mm 0.22 in | - |
| Pixel size | 1.39 µm 0.001390 mm | - | 1.39 µm 0.001390 mm | - |
| Crop factor | 7.62 | - | 7.62 | - |
| Aperture | - | - | f/1.8 | - |
| Focal length and 35 mm equivalent | - | - | 3.5 mm 26.67 mm *(35 mm / full frame) | - |
| Flash type | LED | LED | LED | LED |
| Image resolution | 3264 x 2448 pixels 7.99 MP | 4096 x 3072 pixels 12.58 MP | 3264 x 2448 pixels 7.99 MP | 4160 x 3120 pixels 12.98 MP |
| Video resolution | 1280 x 720 pixels 0.92 MP | 1920 x 1080 pixels 2.07 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 | Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode | Autofocus Continuous shooting Digital image stabilization Geotagging Panorama HDR Face detection | Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus 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 |
| - | - | Interpolated resolution - 13 MP | - |
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 model | - | - | GalaxyCore GC2155 | GalaxyCore GC2155 |
| Sensor size | - | - | 2.8 x 2.1 mm 0.14 in | 2.8 x 2.1 mm 0.14 in |
| Pixel size | - | - | 1.75 µm 0.001750 mm | 1.75 µm 0.001750 mm |
| Crop factor | - | - | 12.36 | 12.36 |
| Aperture | - | - | f/2.8 | - |
| Focal length and 35 mm equivalent | - | - | 3.5 mm 43.27 mm *(35 mm / full frame) | - |
| Auxiliary light | - | - | LED | LED |
| Image resolution | 1600 x 1200 pixels 1.92 MP | - | 1600 x 1200 pixels 1.92 MP | 1600 x 1200 pixels 1.92 MP |
| Video resolution | 640 x 480 pixels 0.31 MP | - | 640 x 480 pixels 0.31 MP | 640 x 480 pixels 0.31 MP |
| Video FPS | 30 fps | - | 30 fps | 30 fps |
| - | 5 MP | Interpolated resolution - 5 MP | Interpolated resolution - 5 MP |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker | Loudspeaker Earpiece | Loudspeaker | Loudspeaker |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | Yes | Yes | Yes | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS | GPS A-GPS | GPS A-GPS | 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 | 802.11b 802.11g 802.11n Wi-Fi Hotspot | 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 | 4.0 | 4.0 | 4.0 | 4.0 |
| Features | A2DP | A2DP EDR | 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 | Micro USB | Micro USB |
| Version | 2.0 | 2.0 | 2.0 | 2.0 |
| Features | Charging Mass storage | Charging Mass storage On-The-Go | 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 | 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 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 WAP 2.0 | 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 AMR FLAC MIDI MP3 OGG WMA WAV | AAC AMR AMR-WB eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AMR AMR-WB 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 MKV MP4 Xvid | H.263 H.264 MP4 RMVB | 3GPP AVI DivX Flash Video H.263 H.264 MKV QuickTime MP4 WebM WMV Xvid | 3GPP AVI DivX Flash Video H.263 H.264 MKV QuickTime 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 | 2000 mAh | 3000 mAh | 2300 mAh | 3000 mAh |
| Type | Li-Ion | Li-Polymer | Li-Ion | Li-Polymer |
| Charger output power | - | - | 5 V / 1 A | 5 V / 1 A |
| Features | Removable | Removable | Non-removable | Non-removable |
| Gretel A7 | Mlais MX69 | Gretel A9 | Gretel A6 |