Comparison between:
- ZTE Grand X Max 2
- Xiaomi Redmi 6 Pro
- Xiaomi Redmi Note 9
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| ZTE Grand X Max 2 | Xiaomi Redmi 6 Pro | Xiaomi Redmi Note 9 | |
 |  |  | |
| Model alias | Grand X Max2 Z988 | Redmi 6Pro | Redmi Note9 M2003J15SC M2003J15SS M2003J15SI |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 83.8 mm 8.38 cm 0.275 ft 3.299 in | 71.68 mm 7.168 cm 0.235 ft 2.822 in | 77.2 mm 7.72 cm 0.253 ft 3.039 in |
| Height | 164.1 mm 16.41 cm 0.538 ft 6.461 in | 149.33 mm 14.933 cm 0.49 ft 5.879 in | 162.3 mm 16.23 cm 0.532 ft 6.39 in |
| Thickness | 8.89 mm 0.889 cm 0.029 ft 0.35 in | 8.75 mm 0.875 cm 0.029 ft 0.344 in | 8.9 mm 0.89 cm 0.029 ft 0.35 in |
| Weight | 178 g 0.39 lbs 6.31 oz | 178 g 0.39 lbs 6.28 oz | 199 g 0.44 lbs 7.02 oz |
| Volume | 122.25 cm³ 7.42 in³ | 93.66 cm³ 5.69 in³ | 111.51 cm³ 6.77 in³ |
| Colors | Blue | Gold Rose-gold Blue Red Black | Blue Black White Pink Red Green |
| Body materials | Plastic | Aluminium alloy Polycarbonate | Glass 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 |
| Number of SIM cards | 1 | 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 (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) GSM 1900 MHz (B2) |
| CDMA | - | CDMA 800 MHz | CDMA 800 MHz (BC0) |
| 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 | - |
| UMTS | UMTS 850 MHz UMTS 1900 MHz UMTS 2100 MHz | UMTS 850 MHz UMTS 900 MHz UMTS 1900 MHz UMTS 2100 MHz | - |
| LTE | LTE 850 MHz LTE 1700/2100 MHz LTE 1900 MHz LTE 700 MHz (B12) | 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 | 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 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 6 EV-DO Rev. A TD-SCDMA TD-HSDPA | UMTS EDGE GPRS HSPA+ LTE Cat 12 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 Marshmallow | MIUI V9.6 (Android 8.1 Oreo) MIUI V10.3.2 (Android 9.0 Pie) | MIUI V11 (Android 10) MIUI V12 (Android 11) |
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 617 (MSM8952) | Qualcomm Snapdragon 625 (MSM8953) | MediaTek Helio G85 (MT6769Z) |
| Process technology | 28 nm | 14 nm | 12 nm |
| CPU | 4x 1.5 GHz ARM Cortex-A53, 4x 1.2 GHz ARM Cortex-A53 | 8x 2.0 GHz ARM Cortex-A53 | 2x 2.0 GHz ARM Cortex-A75, 6x 1.8 GHz ARM Cortex-A55 |
| CPU bits | 64 bit | 64 bit | 64 bit |
| Instruction set | ARMv8-A | ARMv8-A | ARMv8.2-A |
| Level 0 cache memory (L0) | 4 KB + 4 KB | - | - |
| Level 1 cache memory (L1) | 16 KB + 16 KB | - | - |
| Level 2 cache memory (L2) | 2048 KB 2 MB | - | - |
| CPU cores | 8 | 8 | 8 |
| CPU frequency | 1500 MHz | 2000 MHz | 2000 MHz |
| GPU | qualcomm adreno 405 | Qualcomm Adreno 506 | ARM Mali-G52 2EEMC2 |
| GPU cores | - | - | 2 |
| GPU frequency | 550 MHz | 650 MHz | 1000 MHz |
| RAM capacity | 2 GB | 3 GB 4 GB | 3 GB 4 GB |
| RAM type | LPDDR3 | LPDDR3 | LPDDR4X |
| RAM channels | Single channel | Single channel | Double channel |
| RAM frequency | 933 MHz | 933 MHz | 1800 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 16 GB | 32 GB 64 GB | 64 GB 128 GB |
| - | - | 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 | 6 in 152.4 mm 15.24 cm | 5.84 in 148.34 mm 14.83 cm | 6.53 in 165.86 mm 16.59 cm |
| Width | 2.94 in 74.72 mm 7.47 cm | 2.5 in 63.5 mm 6.35 cm | 2.74 in 69.51 mm 6.95 cm |
| Height | 5.23 in 132.83 mm 13.28 cm | 5.28 in 134.06 mm 13.41 cm | 5.93 in 150.6 mm 15.06 cm |
| Aspect ratio | 1.778:1 16:9 | 2.111:1 | 2.167:1 |
| Resolution | 1080 x 1920 pixels | 1080 x 2280 pixels | 1080 x 2340 pixels |
| Pixel density | 367 ppi 144 ppcm | 432 ppi 169 ppcm | 395 ppi 155 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 72.4 % | 79.79 % | 83.81 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch Scratch resistant | Capacitive Scratch resistant |
| - | 2.5D curved glass screen 1500:1 contrast ratio 84% NTSC | 2.5D curved glass screen Corning Gorilla Glass 5 DotDisplay Oleophobic coating TÜV Rheinland Low Blue Light Certification 84% NTSC 1500:1 |
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 Gyroscope Fingerprint |
| - | Fingerprint sensor model - Fingerprint Cards FPC1028; Goodix | - |
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 model | - | Sony IMX486 Exmor RS | Samsung S5KGM1 |
| Sensor type | CMOS | CMOS | CMOS |
| Sensor format | - | 1/2.9" | 1/2.25" |
| Pixel size | - | 1.25 µm 0.001250 mm | 0.8 µm 0.000800 mm |
| Aperture | - | f/2.2 | f/1.79 |
| Number of lenses | - | 5 | 6 |
| Flash type | LED | LED | LED |
| Image resolution | 4160 x 3120 pixels 12.98 MP | 4000 x 3000 pixels 12 MP | 8000 x 6000 pixels 48 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP | 3840 x 2160 pixels 8.29 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 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) | Autofocus Digital zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Macro mode Phase detection autofocus (PDAF) |
| Secondary rear camera - 2 MP | 720p @ 120 fps Secondary rear camera - 5 MP Sensor model - Samsung S5K5E8 (#2) Sensor type - CMOS BSI (#2) Sensor size - 2.9 x 2.15 mm (#2) Pixel size - 1.12 μm (#2) Aperture size - f/2.2 (#2) | Sony IMX582 versions also available Pixel size - 1.6 μm (4-in-1 pixel binning) Secondary rear camera - 8 MP (ultra-wide) Sensor model - OmniVision OV8856 (#2) GalaxyCore GC8034 version also available(#2) Sensor size - 1/4" (#2) Pixel size - 1.12 μm (#2) Aperture size - f/2.2 (#2) Angle of view - 118° (#2) Focal length (35 mm equivalent) - 13 mm (#2) Third rear camera - 2MP (depth-sensing) Sensor model - GalaxyCore GC02M1 (#3) Sensor size - 1/5" (#3) Pixel size - 1.75 μm (#3) Aperture size - f/2.4 (#3) Fourth rear camera - 2MP (macro) Pixel size - 1.12 μm (#4) 2 cm shooting distance (#4) |
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 | - | OmniVision OV5675 | OmniVision OV13B10 |
| Sensor type | - | PureCel | - |
| Sensor size | - | 2.98 x 2.21 mm 0.15 in | - |
| Pixel size | - | 1.151 µm 0.001151 mm | - |
| Crop factor | - | 11.66 | - |
| Aperture | - | f/2 | f/2 |
| Image resolution | 2560 x 1920 pixels 4.92 MP | 2592 x 1944 pixels 5.04 MP | 4160 x 3120 pixels 12.98 MP |
| Video resolution | - | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | - | 30 fps | 30 fps |
| Features | - | Face unlock | Face unlock HDR Face detection |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker | Loudspeaker Earpiece | Loudspeaker Earpiece |
| Dolby Audio HAC (M4/T3) - Hearing Aid Compatibility | - | Smart PA Dual microphones with active noise cancellation 1216 linear speaker Vibration motor |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | No | Yes | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS | GPS A-GPS GLONASS BeiDou | GPS A-GPS GLONASS Galileo NavIC Beidou |
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 802.11n 5GHz Dual band Wi-Fi Hotspot Wi-Fi Direct | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz Dual band Wi-Fi Hotspot Wi-Fi Direct Wi-Fi Display | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz 802.11ac Dual band 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 | 4.1 | 4.2 | 5.0 |
| Features | A2DP | A2DP HID | A2DP EDR HID LE |
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 | USB Type-C |
| Version | 2.0 | 2.0 | 2.0 |
| Features | Charging Mass storage | Charging Host 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 |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Tethering | Computer sync OTA sync Infrared Tethering VoLTE | Computer sync OTA sync Infrared Tethering NFC VoLTE ViLTE VoWiFi |
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 AMR eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AAC+ AC3 AMR eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AAC+ AMR AMR-WB aptX aptX HD eAAC+ FLAC MIDI MP3 OGG WMA WAV LDAC |
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 MP4 Xvid | 3GPP AVI H.263 H.264 MKV MP4 VC-1 VP8 Xvid | 3GPP AVI DivX H.263 H.264 H.265 MKV MP4 VC-1 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 | 3400 mAh | 4000 mAh | 5020 mAh |
| Type | Li-Ion | Li-Polymer | Li-Ion |
| 2G talk time | 6 h 30 min 6.5 h 390 min 0.3 days | - | - |
| 2G stand-by time | 860 h 51600 min 35.8 days | - | - |
| 3G talk time | 6 h 30 min 6.5 h 390 min 0.3 days | - | - |
| 3G stand-by time | 860 h 51600 min 35.8 days | - | - |
| Charger output power | - | 5 V / 2 A | 5 V / 3 A 9 V / 2.23 A 12 V / 1.67 A 10 V / 2.25 A |
| Quick charge technology | Qualcomm Quick Charge 2.0 | - | - |
| Features | Fast charging Non-removable | Non-removable | Fast charging Non-removable |
| - | - | 9W wired reverse charging |
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) | - | - | 0.795 W/kg |
| Body SAR (EU) | - | - | 1.138 W/kg |
| Head SAR (USA) | 0.75 W/kg | - | 0.84 W/kg |
| Body SAR (USA) | 0.98 W/kg | - | 0.9 W/kg |
| Head SAR (India) | - | 0.964 W/kg | 0.853 W/kg |
| Body SAR (India) | - | 0.78 W/kg | 0.433 W/kg |
Additional features
Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.
| Additional features | - | M1805D1SI - SAR (Specific Absorption Rate) India: head - 0.964 W/kg; body - 0.780 W/kg | P2i splash-proof nano-coating |
| ZTE Grand X Max 2 | Xiaomi Redmi 6 Pro | Xiaomi Redmi Note 9 |