Comparison between:
- Nokia 2.2
- ZTE Blade 20 5G
- Xiaomi Redmi 6A
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Nokia 2.2 | ZTE Blade 20 5G | Xiaomi Redmi 6A | |
 Prices |  |  Prices | |
| Model alias | TA-1179 TA-1183 TA-1188 TA-1191 | - | Redmi6A |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 70.56 mm 7.056 cm 0.231 ft 2.778 in | 75.8 mm 7.58 cm 0.249 ft 2.984 in | 71.5 mm 7.15 cm 0.235 ft 2.815 in |
| Height | 145.96 mm 14.596 cm 0.479 ft 5.746 in | 165.9 mm 16.59 cm 0.544 ft 6.531 in | 147.5 mm 14.75 cm 0.484 ft 5.807 in |
| Thickness | 9.3 mm 0.93 cm 0.031 ft 0.366 in | 8.9 mm 0.89 cm 0.029 ft 0.35 in | 8.3 mm 0.83 cm 0.027 ft 0.327 in |
| Weight | 153 g 0.34 lbs 5.4 oz | - | 145 g 0.32 lbs 5.11 oz |
| Volume | 95.78 cm³ 5.82 in³ | 111.92 cm³ 6.8 in³ | 87.53 cm³ 5.32 in³ |
| Colors | Black Gray | Jazzy Gray Light Blue Mint | Gold Rose-gold Blue Gray |
| Body materials | Polycarbonate | Polycarbonate | Polycarbonate |
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 / microSD | Nano-SIM |
| Number of SIM cards | 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) |
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 (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) GSM 1900 MHz (B2) | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| CDMA | - | CDMA 800 MHz (BC0) | CDMA 800 MHz |
| W-CDMA | - | W-CDMA 850 MHz (B5) W-CDMA 900 MHz (B8) W-CDMA 1900 MHz (B2) W-CDMA 2100 MHz (B1) | - |
| TD-SCDMA | - | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz |
| UMTS | UMTS 850 MHz UMTS 900 MHz UMTS 2100 MHz | - | UMTS 850 MHz UMTS 900 MHz UMTS 1900 MHz UMTS 2100 MHz |
| LTE | LTE-TDD 2300 MHz (B40) LTE-TDD 2600 MHz (B38) LTE 800 MHz LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz LTE 700 MHz (B28) | LTE-FDD 850 MHz (B5) LTE-FDD 900 MHz (B8) LTE-FDD 1800 MHz (B3) LTE-FDD 2100 MHz (B1) LTE-FDD 2600 MHz (B7) LTE-TDD 1900 MHz (B39) LTE-TDD 2000 MHz (B34) LTE-TDD 2600 MHz (B38) | LTE-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz |
| 5G NR | - | 5G-FDD 1800 MHz (n3) 5G-FDD 2100 MHz (n1) 5G-TDD 2500 MHz (n41) 5G-TDD 3500 MHz (n78) 5G-TDD 4700 MHz (n79) | - |
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 6 | 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 One (Android 9.0 Pie) | Android 10 | MIUI V9.6 (Android 8.1 Oreo) MIUI V10.0 (Android 8.1 Oreo) MIUI (Android 9.0 Pie) |
| User interface (UI) | - | MiFavor 10.5 | - |
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 Helio A22 (MT6761) | MediaTek Dimensity 720 (MT6853V) | MediaTek Helio A22 (MT6761) |
| Process technology | 12 nm | 7 nm | 12 nm |
| CPU | ARM Cortex-A53 | 2x 2.0 GHz ARM Cortex-A76, 6x 2.0 GHz ARM Cortex-A55 | ARM Cortex-A53 |
| CPU bits | 64 bit | 64 bit | 64 bit |
| Instruction set | ARMv8-A | ARMv8.3-A | ARMv8-A |
| CPU cores | 4 | 8 | 4 |
| CPU frequency | 2000 MHz | 2000 MHz | 2000 MHz |
| GPU | PowerVR GE8300 | ARM Mali-G57 MC3 | PowerVR GE8300 |
| GPU cores | - | 3 | - |
| RAM capacity | 2 GB 3 GB | 6 GB | 2 GB 3 GB 4 GB |
| RAM type | LPDDR3 | LPDDR4X | LPDDR3 |
| RAM channels | Single channel | Double channel | Single channel |
| RAM frequency | 933 MHz | 1866 MHz | 933 MHz |
| - | Cooling system with heatsink | - |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 16 GB 32 GB | 128 GB | 16 GB 32 GB 64 GB |
| eMMC | - | eMMC 5.1 |
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 |
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 |
| Diagonal size | 5.71 in 145.03 mm 14.5 cm | 6.52 in 165.61 mm 16.56 cm | 5.45 in 138.43 mm 13.84 cm |
| Width | 2.44 in 62.09 mm 6.21 cm | 2.68 in 67.96 mm 6.8 cm | 2.44 in 61.91 mm 6.19 cm |
| Height | 5.16 in 131.07 mm 13.11 cm | 5.95 in 151.02 mm 15.1 cm | 4.87 in 123.82 mm 12.38 cm |
| Aspect ratio | 2.111:1 | 2.222:1 | 2:1 2:1 (18:9) |
| Resolution | 720 x 1520 pixels | 720 x 1600 pixels | 720 x 1440 pixels |
| Pixel density | 295 ppi 115 ppcm | 269 ppi 105 ppcm | 295 ppi 115 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 79.27 % | 81.88 % | 72.92 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch |
| Always-On Display | - | 2.5D curved glass screen 1000:1 contrast ratio |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer | Proximity Light Accelerometer Compass Gyroscope Fingerprint | Proximity Light Accelerometer Compass |
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 |
| Sensor format | 1/3" | - | - |
| Pixel size | 1.12 µm 0.001120 mm | - | - |
| Aperture | f/2.2 | f/1.8 | f/2.2 |
| Focal length and 35 mm equivalent | - | - | 3.79 mm |
| Number of lenses | - | - | 5 |
| Flash type | LED | LED | Dual LED |
| Image resolution | 4160 x 3120 pixels 12.98 MP | 4608 x 3456 pixels 15.93 MP | 4160 x 3120 pixels 12.98 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP |
| Video 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 Phase detection autofocus (PDAF) | Autofocus Continuous shooting Digital zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Phase detection autofocus (PDAF) |
| - | Secondary rear camera - 8 MP (ultra-wide angle) Angle of view - 120° (#2) Aperture size - f/2.2 (#2) Third rear camera - 2 MP (depth-sensing) Aperture size - f/2.42 (#3) | - |
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 | - |
| Aperture | - | f/2 | f/2.2 |
| Image resolution | 2560 x 1920 pixels 4.92 MP | 3264 x 2448 pixels 7.99 MP | 2592 x 1944 pixels 5.04 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | 1280 x 720 pixels 0.92 MP | 1920 x 1080 pixels 2.07 MP |
| Video 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 |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | Yes | Yes | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS GLONASS | GPS A-GPS | 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 Wi-Fi Hotspot Wi-Fi Direct | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz 802.11ac Dual band Wi-Fi Hotspot Wi-Fi Direct Wi-Fi Display | 802.11b 802.11g 802.11n Wi-Fi Hotspot Wi-Fi Direct Wi-Fi Display |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 4.2 | 5.1 | 4.2 |
| Features | A2DP | 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 | USB Type-C | Micro USB |
| Version | 2.0 | 2.0 | 2.0 |
| Features | Charging Mass storage On-The-Go | Charging Mass storage On-The-Go | Charging Host 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 |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Tethering VoLTE | Computer sync OTA sync Tethering VoLTE | Computer sync OTA sync Tethering VoLTE |
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 |
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 eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AMR AMR-WB eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AAC+ AC3 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 MKV MP4 WMV Xvid | 3GPP AVI H.263 H.264 MKV MP4 WMV Xvid | 3GPP AVI H.263 H.264 MKV MP4 VC-1 VP8 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 | 3000 mAh | 4000 mAh | 3000 mAh |
| Type | Li-Polymer | Li-Ion | Li-Polymer |
| Charger output power | 5 V / 1 A | 9 V / 2 A | 5 V / 1 A |
| Features | Removable | Fast charging Non-removable | Non-removable |
| Battery model: HQ510 | - | - |
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) | 0.446 W/kg | - | 0.656 W/kg |
| Body SAR (EU) | 1.608 W/kg | - | 1.523 W/kg |
| Head SAR (USA) | 0.648 W/kg | - | 0.78 W/kg |
| Body SAR (USA) | 0.728 W/kg | - | 1.17 W/kg |
Additional features
Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.
| Additional features | TA-1179 - SAR (Specific Absorption Rate) EU: head - 0.446 W/kg; body - 1.608 W/kg TA-1179 - SAR (Specific Absorption Rate) US: head - 0.480 W/kg; body - 1.430 W/kg TA-1183 - SAR (Specific Absorption Rate) EU: head - 0.446 W/kg; body - 1.608 W/kg TA-1183 - SAR (Specific Absorption Rate) US: head - 0.648 W/kg; body - 0.728 W/kg TA-1188 - SAR (Specific Absorption Rate) EU: head - 0.446 W/kg; body - 1.608 W/kg TA-1188 - SAR (Specific Absorption Rate) US: head - 0.430 W/kg; body - 1.370 W/kg TA-1191 - SAR (Specific Absorption Rate) EU: head - 0.446 W/kg; body - 1.608 W/kg TA-1191 - SAR (Specific Absorption Rate) US: head - 0.430 W/kg; body - 1.370 W/kg | - | M1804C3CG - SAR (Specific Absorption Rate) EU: head - 0.656 W/kg; body - 1.523 W/kg M1804C3CG - SAR (Specific Absorption Rate) US: head - 0.780 W/kg; body - 1.170 W/kg M1804C3CH - SAR (Specific Absorption Rate) EU: head - 0.442 W/kg; body - 1.356 W/kg M1804C3CH - SAR (Specific Absorption Rate) US: head - 0.790 W/kg; body - 1.180 W/kg M1804C3CI - SAR (Specific Absorption Rate) India: head - 0.746 W/kg; body - 0.715 W/kg |
| Nokia 2.2 | ZTE Blade 20 5G | Xiaomi Redmi 6A |