In depth comparison and review of OPPO AX7 and Vivo V21 5G. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | OPPO AX7 | Vivo V21 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | V2050 | |
| Form Factor | Touch | Touch | |
| Height | 155.9 mm | 159.68 mm | Vivo V21 5G has greater height than OPPO AX7. |
| Width | 75.4 mm | 73.9 mm | OPPO AX7 has greater width than Vivo V21 5G. |
| Depth | 8.1 mm | 7.29 mm | Vivo V21 5G is narrower than OPPO AX7. |
| Weight | 168 g | 176 g | OPPO AX7 is lighter than OPPO AX7. |
| Body Colour | Glaze blue | Dusk blue | Sunset dazzle | |
| Body Material | - | Matte glass | |
| Waterproof (Water-resistant) | - | - | |
| IP rating | - | IP52 | |
| SAR Value | - | 1.09 W/kg (body), 3.19 W/kg (limb), 0.91 W/kg (head) | |
| Connector Type | Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
USB Type-C - 24 pin USB-C | |
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Single-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | OPPO AX7 | Vivo V21 5G |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | LTPS TFT | AMOLED | |
| Screen Size (Display Size) | 6.2" | 6.44" | Vivo V21 5G has larger screen size than OPPO AX7. |
| Screen Resolution (Display Resolution) | 1520 x 720 pixels | 2404 x 1080 pixels | Vivo V21 5G has better screen resolution than OPPO AX7. |
| Display Format | HD+ | Full HD+ | |
| Aspect Ratio | - | 20:9 | |
| Max Brightness | - | 800 cd/m² | |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | - | 6000000:1 | |
| HDR | - | Yes | Vivo V21 5G has HDR. |
| HDR Technology | - | HDR10+ | |
| Display Refresh Rate | - | 90 Hz | |
| Display Features | In-Cell Display Technology | - |
| PROCESSOR | OPPO AX7 | Vivo V21 5G |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 450 | MediaTek Dimensity 800U | |
|---|---|---|---|
| Clock Speed | - | 2.4 GHz | |
| Processor Core Qty | - | 8-core | |
| 64-bit Architecture | Yes | - | OPPO AX7 has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 506 | - |
| MEMORY | OPPO AX7 | Vivo V21 5G |
|---|
| RAM | 4 GB | 8 GB | Vivo V21 5G has more RAM than OPPO AX7. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 128 GB | Vivo V21 5G has more internal memory than OPPO AX7. |
| Memory Interface | - | UFS 2.2 | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | microSDHC, microSD, microSDXC - up to 1 TB |
| CAMERA | OPPO AX7 | Vivo V21 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 3 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 64 Megapixel | Vivo V21 5G has better camera resolution than OPPO AX7. |
| Lens Aperture | F/2.2 | F/1.79 | Vivo V21 5G has better lens aperture than OPPO AX7. |
| Lens Construction | 5-element | - | |
| Optical Image Stabiliser (OIS) | - | 4-axis OIS (Optical Image Stabilisation) | Vivo V21 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | - | 10x | |
| Special Effects | HDR | Bokeh effect | |
| Camera Modes | - | Beauty mode, Night, Filter mode, Portrait video, Dual video mode, ultra stable video, kid's face beauty, double exposure | |
| Light Source | LED light | LED flash | |
| Video Resolutions | - | 3840 x 2160 (4K), 1920 x 1080 (1080p) at 120 fps, 1280 x 720 (720p) at 120 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), AR sticker, AI Beautify | Eye Autofocus |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 2 Megapixel | 8 Megapixel | Vivo V21 5G has better second camera resolution than OPPO AX7. |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.4 | F/2.2 | Vivo V21 5G has better second camera lens aperture than OPPO AX7. |
| Field of View (2nd Camera) | - | 120 degree(s) |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Camera Functions (3rd Camera) | - | Super macro camera | |
| Camera Features (3rd Camera) | - | 4cm macro photography |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 16 Megapixel | 44 Megapixels | Vivo V21 5G has better front camera resolution than OPPO AX7. |
| Lens Aperture (Front) | F/2.0 | F/2.0 | Both phones have the same front camera lens aperture. |
| Special Effects (Front) | HDR, Bokeh effect | HDR | |
| Camera Modes (Front) | - | Beauty mode, Night, Filter mode, Dual video mode, ultra stable video, kid's face beauty, double exposure, AI night portrait | |
| Light Source (Front) | - | Dual LED flash | |
| Video Resolutions (Front) | - | 3840 x 2160 (4K) | |
| Camera Features (Front) | - | Optical Image Stabilisation (OIS), 2 x digital zoom, Eye Autofocus |
| BATTERY AND CHARGING | OPPO AX7 | Vivo V21 5G |
|---|
| Battery Capacity (Battery Size) | 4230 mAh | 4000 mAh | OPPO AX7 has larger battery capacity than Vivo V21 5G. |
|---|
| CELLULAR | OPPO AX7 | Vivo V21 5G |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Vivo V21 5G has more advanced generation mobile network. |
| Operating System | ColorOS 5.2 (based on Android 8.1) | Funtouch OS 11.1 (based on Android 11) | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | OPPO AX7 | Vivo V21 5G |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 6, Band 8, Band 19 | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 800, 900, 800 | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 18, Band 19, Band 20, Band 26, Band 28, Band 38, Band 39, Band 40, Band 41 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 17, Band 18, Band 19, Band 20, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66 | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | - | N1, n3, n7, n8, n28, n41, n78, n40 | |
| 5G NR Frequency | - | FDD 2100, FDD 1800, FDD 2600, FDD 900, FDD 700APT, TDD TD 2500, TDD TD 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11b/g/n | Wi-Fi | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 5.1 | |
| NFC | - | Yes | Vivo V21 5G has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | OPPO AX7 | Vivo V21 5G |
|---|
| Supported Digital Audio Standards | - | WAV, MPEG 2 Audio, MP3, FLAC, MIDI, APE (Monkey's Audio), Vorbis | |
|---|---|---|---|
| Supported Digital Video Standards | - | MKV, FLV, 3GP, MP4 |
| FEATURES | OPPO AX7 | Vivo V21 5G |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, G-sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyroscope | |
| Security Devices | Fingerprint reader | Fingerprint reader (under display) | |
| Additional Phone Features | - | Fast Charging, 3 GB of external memory space for RAM |
| OTHERS | OPPO AX7 | Vivo V21 5G |
|---|
| Included Accessories | Headset, screen protection film, USB cable, power adapter, SIM card removal tool, protective case | Headset, headset adapter, SIM card removal tool, pre-installed screen protection film, USB-C cable, protective case | |
|---|---|---|---|
| Compliant Standards | - | IP52 |
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