Comparison between:
- Tambo TA-4
- Tambo TA-40
- Tambo TA-3
- Tambo TA-2
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Tambo TA-4 | Tambo TA-40 | Tambo TA-3 | Tambo TA-2 | |
 |  |  |  | |
| Model alias | TA4 TA 4 | TA40 TA 40 | TA3 TA 3 | TA2 TA 2 |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 70.5 mm 7.05 cm 0.231 ft 2.776 in | 70.5 mm 7.05 cm 0.231 ft 2.776 in | 65.8 mm 6.58 cm 0.216 ft 2.591 in | 71.7 mm 7.17 cm 0.235 ft 2.823 in |
| Height | 148.5 mm 14.85 cm 0.487 ft 5.846 in | 146.2 mm 14.62 cm 0.48 ft 5.756 in | 138.5 mm 13.85 cm 0.454 ft 5.453 in | 143.8 mm 14.38 cm 0.472 ft 5.661 in |
| Thickness | 9.15 mm 0.915 cm 0.03 ft 0.36 in | 8.9 mm 0.89 cm 0.029 ft 0.35 in | 10.1 mm 1.01 cm 0.033 ft 0.398 in | 9.5 mm 0.95 cm 0.031 ft 0.374 in |
| Weight | 162 g 0.36 lbs 5.72 oz | 151 g 0.33 lbs 5.35 oz | 133 g 0.29 lbs 4.7 oz | 150 g 0.33 lbs 5.32 oz |
| Volume | 95.79 cm³ 5.82 in³ | 91.73 cm³ 5.57 in³ | 92.04 cm³ 5.59 in³ | 97.95 cm³ 5.95 in³ |
| Colors | Black Blue Champagne | Gray Blue Red | Black Blue Champagne | Black Gold Rose-gold Silver |
| Body materials | Plastic | Plastic | Plastic | 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 | Nano-SIM | Nano-SIM | Nano-SIM | Nano-SIM |
| 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) | 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 2100 MHz | W-CDMA 900 MHz W-CDMA 2100 MHz | W-CDMA 900 MHz W-CDMA 2100 MHz |
| LTE | LTE 850 MHz LTE 1800 MHz LTE 2100 MHz LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) | LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) | LTE 850 MHz LTE 1800 MHz LTE 2100 MHz LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) | LTE 850 MHz LTE 1800 MHz LTE 2100 MHz LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) |
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 | 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 7.0 Nougat | Android 8.1 Oreo Go Edition | Android 7.0 Nougat | Android 7.0 Nougat |
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 MT6737V | MediaTek MT6739WA | MediaTek MT6737V | Spreadtrum SC9832 |
| Process technology | 28 nm | 28 nm | 28 nm | 28 nm |
| CPU | 4x 1.25 GHz ARM Cortex-A53 | 4x 1.3 GHz ARM Cortex-A53 | 4x 1.25 GHz ARM Cortex-A53 | 4x 1.3 GHz ARM Cortex-A7 |
| CPU bits | 64 bit | 64 bit | 64 bit | 32 bit |
| Instruction set | ARMv8-A | ARMv8-A | ARMv8-A | ARMv7-A |
| Level 1 cache memory (L1) | 32 KB + 32 KB | - | 32 KB + 32 KB | - |
| Level 2 cache memory (L2) | 512 KB 0.5 MB | - | 512 KB 0.5 MB | - |
| CPU cores | 4 | 4 | 4 | 4 |
| CPU frequency | 1250 MHz | 1300 MHz | 1250 MHz | 1300 MHz |
| GPU | ARM Mali-T720 MP2 | IMG PowerVR GE8100 | ARM Mali-T720 MP2 | ARM Mali-400 MP2 |
| GPU cores | 2 | - | 2 | 2 |
| GPU frequency | 550 MHz | 450 MHz | 550 MHz | 512 MHz |
| RAM capacity | 2 GB | 1 GB | 1 GB | 1 GB |
| RAM type | LPDDR3 | LPDDR3 | LPDDR3 | LPDDR3 |
| RAM channels | Single channel | Single channel | Single channel | Single channel |
| RAM frequency | 640 MHz | 667 MHz | 640 MHz | 533 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 16 GB | 8 GB | 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 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 | IPS | IPS | IPS | TN |
| Diagonal size | 5.5 in 139.7 mm 13.97 cm | 5.45 in 138.43 mm 13.84 cm | 4.95 in 125.73 mm 12.57 cm | 5 in 127 mm 12.7 cm |
| Width | 2.46 in 62.48 mm 6.25 cm | 2.44 in 61.91 mm 6.19 cm | 2.21 in 56.23 mm 5.62 cm | 2.45 in 62.23 mm 6.22 cm |
| Height | 4.92 in 124.95 mm 12.5 cm | 4.87 in 123.82 mm 12.38 cm | 4.43 in 112.46 mm 11.25 cm | 4.36 in 110.71 mm 11.07 cm |
| Aspect ratio | 2:1 2:1 (18:9) | 2:1 2:1 (18:9) | 2:1 2:1 (18:9) | 1.779:1 |
| Resolution | 640 x 1280 pixels | 480 x 960 pixels | 480 x 960 pixels | 480 x 854 pixels |
| Pixel density | 260 ppi 102 ppcm | 197 ppi 77 ppcm | 217 ppi 85 ppcm | 196 ppi 77 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 74.81 % | 74.61 % | 69.61 % | 67.03 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch |
| 2.5D curved glass screen | - | - | 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 Fingerprint | Proximity Light Accelerometer Fingerprint | Proximity Light Accelerometer Fingerprint | 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 | CMOS | CMOS |
| Flash type | Dual LED | Dual LED | Dual LED | LED |
| Image resolution | 3264 x 2448 pixels 7.99 MP | 2592 x 1944 pixels 5.04 MP | 2592 x 1944 pixels 5.04 MP | 2592 x 1944 pixels 5.04 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 | 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 | 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 |
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 | CMOS | CMOS | CMOS |
| Auxiliary light | LED | LED | LED | LED |
| Image resolution | 2560 x 1920 pixels 4.92 MP | 2560 x 1920 pixels 4.92 MP | 2560 x 1920 pixels 4.92 MP | 2560 x 1920 pixels 4.92 MP |
| Video resolution | 640 x 480 pixels 0.31 MP | 640 x 480 pixels 0.31 MP | 640 x 480 pixels 0.31 MP | 640 x 480 pixels 0.31 MP |
| Video FPS | 30 fps | 30 fps | 30 fps | 30 fps |
| Features | Face unlock | Face unlock | Face unlock | - |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece |
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 | 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 | 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 On-The-Go | 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 | 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 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 AMR eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AMR eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AMR 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 MP4 | 3GPP AVI H.263 H.264 MP4 | 3GPP AVI H.263 H.264 MP4 | 3GPP AVI H.263 H.264 MP4 |
Battery
The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.
| Capacity | 3000 mAh | 2400 mAh | 2100 mAh | 2500 mAh |
| Type | Li-Polymer | Li-Ion | Li-Ion | Li-Ion |
| 2G talk time | 25 h 1500 min 1 days | 8 h 480 min 0.3 days | 15 h 900 min 0.6 days | 20 h 1200 min 0.8 days |
| 2G stand-by time | 250 h 15000 min 10.4 days | 170 h 10200 min 7.1 days | 200 h 12000 min 8.3 days | - |
| 3G talk time | 25 h 1500 min 1 days | 8 h 480 min 0.3 days | 15 h 900 min 0.6 days | 20 h 1200 min 0.8 days |
| 3G stand-by time | 150 h 9000 min 6.3 days | 170 h 10200 min 7.1 days | 200 h 12000 min 8.3 days | - |
| Features | Non-removable | Removable | 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 (USA) | - | - | 0.567 W/kg | 0.526 W/kg |
| Body SAR (USA) | - | - | 1.263 W/kg | 1.07 W/kg |
| Tambo TA-4 | Tambo TA-40 | Tambo TA-3 | Tambo TA-2 |