In depth comparison and review of ASUS ZenFone 3 (ZE520KL) and TCL 20SE. 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 | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | ZE520KL | T671H | |
| Form Factor | Touch | Touch | |
| Height | 146.87 mm | 172.08 mm | TCL 20SE has greater height than ASUS ZenFone 3 (ZE520KL). |
| Width | 73.98 mm | 77.14 mm | TCL 20SE has greater width than ASUS ZenFone 3 (ZE520KL). |
| Depth | 7.69 mm | 9.1 mm | ASUS ZenFone 3 (ZE520KL) is narrower than ASUS ZenFone 3 (ZE520KL). |
| Weight | 144 g | 206 g | ASUS ZenFone 3 (ZE520KL) is lighter than ASUS ZenFone 3 (ZE520KL). |
| Body Colour | Moon white | Gold shimmer | Black sapphire | Nuit black | Aurora green | |
| Body Material | Metal, glass | Polycarbonate, polymethyl methacrylate (PMMA) | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.938 W/kg (body), 0.278 W/kg (head) | 1.43 W/kg (body), 0.81 W/kg (head), 3.12 W/kg (limb) | |
| Integrated Components | FM radio | FM radio, LED flashlight | |
| Connector Type | Headset jack - mini-phone 3.5mm USB Type-C - 24 pin USB-C |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM (SIM1 and SIM2/MicroSD slots) | Dual-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | Nano SIM + nano SIM/microSD |
| DISPLAY | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | Super IPS+ | IPS | |
| Screen Size (Display Size) | 5.2" | 6.82" | TCL 20SE has larger screen size than ASUS ZenFone 3 (ZE520KL). |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 1640 x 720 pixels | ASUS ZenFone 3 (ZE520KL) has better screen resolution than TCL 20SE. |
| Display Format | Full HD | HD+ | |
| Pixel Density | - | 263 ppi | |
| Aspect Ratio | - | 20.5:9 | |
| Max Brightness | 600 cd/m² | 450 cd/m² | ASUS ZenFone 3 (ZE520KL) has better display brightness than TCL 20SE. |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | - | 1500:1 | |
| Display Enhancement Technology | Bluelight Filter for Eye Care | Eye comfort mode, SDR-to-HDR colour enhancement | |
| Display Features | ASUS Glove Touch technology, 2.5D curved glass | 2.5D Glass, Sunlight Display, Reading mode, Dark mode, CinemaVision display, V-notch display, TCL NXTVISION | |
| Display Protection (Screen Protector) | Fingerprint-resistant oleophobic coating, Corning Gorilla Glass (scratch resistant glass) | Fingerprint-resistant coating |
| PROCESSOR | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 625 | Qualcomm Snapdragon 460 | |
|---|---|---|---|
| Clock Speed | 2 GHz | 1.8 GHz | ASUS ZenFone 3 (ZE520KL) has higher clock speed than TCL 20SE. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | ASUS ZenFone 3 (ZE520KL) has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 506 | Qualcomm ADRENO 610 |
| MEMORY | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| RAM | 3 GB | LPDDR3 SDRAM - 4 GB | TCL 20SE has more RAM than ASUS ZenFone 3 (ZE520KL). |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 64 GB | TCL 20SE has more internal memory than ASUS ZenFone 3 (ZE520KL). |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 2 TB | microSDHC, microSD, microSDXC - up to 256 GB |
| CAMERA | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 16 Megapixel | 16 Megapixel | Both phones have the same camera resolution. |
| Sensor Size | - | 1/2.77" | |
| Sensor Name | Sony Exmor RS IMX298 sensor | - | |
| Lens Aperture | F/2.0 | F/1.8 | TCL 20SE has better lens aperture than ASUS ZenFone 3 (ZE520KL). |
| Lens Construction | 6-element | 5-element | |
| Field of View (FoV) | - | 77 degree(s) | |
| Pixel Size | - | 1.12 μm | |
| Optical Image Stabiliser (OIS) | 4 Stop OIS (Optical Image Stabilisation) | - | ASUS ZenFone 3 (ZE520KL) has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Digital Zoom | - | 4x | |
| Special Effects | Depth of field | HDR, Bokeh effect | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Panorama, Time-lapse mode, night mode, manual mode, Real time beauty mode, super resolution mode, All Smiles mode, Mini mode | Panorama, Slow motion mode, Pro mode, night mode, super resolution mode, portrait mode, Filter mode, low-light video, Light Trace Mode, Stop-Motion Video Mode, Super Macro Mode, AI colour portrait video, AI Sky Enhancement | |
| Face Recognition (Face ID) | - | Face detection | TCL 20SE has face detection. |
| Light Source | Dual LED flash | Single tone dual LED flash | |
| Video Resolutions | 3840 x 2160 (4K) | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Sapphire crystal lens cover, GIF animation function, Smart Remove, Electronic Image Stabiliser (EIS), Time Rewind, Largan lens | Snapshot in video recording, AI Quad camera, Audio zoom, scene detection 2.0 |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 5 Megapixel | |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/5" | |
| Lens Type (2nd Camera) | - | Super wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.2 | |
| Lens Element Qty (2nd Camera) | - | 4-element | |
| Field of View (2nd Camera) | - | 115 degree(s) | |
| Pixel Size (2nd Camera) | - | 1.12 μm | |
| Camera Features (2nd Camera) | - | 4-piece lens |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Sensor Size (3rd Camera) | - | 1/5" | |
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Lens Element Qty (3rd Camera) | - | 3-element | |
| Field of View (3rd Camera) | - | 83 degree(s) | |
| Pixel Size (3rd Camera) | - | 1.75 μm | |
| Camera Functions (3rd Camera) | - | Depth camera |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Sensor Size (4th Camera) | - | 1/5" | |
| Lens Aperture (4th Camera) | - | F/2.4 | |
| Lens Element Qty (4th Camera) | - | 3-element | |
| Field of View (4th Camera) | - | 83 degree(s) | |
| Pixel Size (4th Camera) | - | 1.75 μm | |
| Camera Functions (4th Camera) | - | Macro camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 8 Megapixel | Both phones have the same front camera resolution. |
| Sensor Size (Front) | - | 1/4" | |
| Lens Aperture (Front) | F/2.0 | F/2.0 | Both phones have the same front camera lens aperture. |
| Lens Element Qty (Front) | - | 4-element | |
| Field of View (Front) | - | 80.6 degree(s) | |
| Pixel Size (Front) | - | 1.12 μm | |
| Focus Adjustment | - | Focus free | |
| Special Effects (Front) | - | HDR, Face Beautification | |
| HDR Mode (Front) | Auto HDR mode | - | |
| Camera Modes (Front) | Selfie panorama | Portrait mode | |
| Face Recognition (Face ID) | - | Face detection | TCL 20SE has face detection. |
| Light Source (Front) | - | Display flash | |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Front) | PixelMaster camera | - |
| BATTERY AND CHARGING | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| Battery Capacity (Battery Size) | 2650 mAh | 5000 mAh | TCL 20SE has larger battery capacity than ASUS ZenFone 3 (ZE520KL). |
|---|---|---|---|
| Recharge Time (Charging Time) | - | 4 hours | |
| Standby Time | - | 336 hours | |
| Run Time Details | - | Standby: up to 336 hrs Playback (video): up to 17 hrs Playback (audio): up to 60 hrs Active online usage (4G): up to 16 hrs |
| CELLULAR | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 6.0 (Marshmallow) | Android 11 | |
| User Interface | ASUS ZenUI 3.0 | TCL UI | |
| Intelligent Assistant | - | Google Assistant | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, FDD-LTE, DC-HSPA+ | GPRS, EDGE, HSPA+, LTE, VoLTE, VoWiFi | |
|---|---|---|---|
| 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 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 5, Band 7, Band 8, Band 20 | Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| Wireless Interface | Infrared (IrDA), IEEE 802.11b/g/n/ac | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 5.0 | |
| NFC | - | Yes | TCL 20SE has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| Supported Digital Audio Standards | - | AAC, PCM, AMR, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), AWB, Vorbis | |
|---|---|---|---|
| Sound Enhancements | - | Hi-Res audio |
| FEATURES | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| 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, gyro sensor, hall sensor, RGB sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass | |
| Security Devices | Fingerprint reader | Face recognition, fingerprint reader | |
| Security Technology | - | Face Key | |
| Additional Phone Features | Infrared remote control, Dual microphones, Hi-Res Audio, Google Drive Storage (100 GB) (free for 2 years), ASUS SonicMaster 3.0 technology, ASUS NoiseZero Talk technology | HD Voice, dual microphones with noise cancellation, Face Key, Google Lens, Google Assistant Button, floating window multitasking |
| OTHERS | ASUS ZenFone 3 (ZE520KL) | TCL 20SE |
|---|
| Included Accessories | Power adapter | Power adapter, SIM card removal tool, USB-C cable, TPU case | |
|---|---|---|---|
| Compliant Standards | - | HAC (Hearing Aid Compatible) |
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