Detailed comparison and review of OPPO Reno4 Z 5G and Samsung Galaxy S21 FE 5G. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | CPH2065 | SM-G990B/DS | |
| Form Factor | Touch | Touch | |
| Height | 163.8 mm | 155.7 mm | OPPO Reno4 Z 5G has greater height than Samsung Galaxy S21 FE 5G. |
| Width | 75.5 mm | 74.5 mm | OPPO Reno4 Z 5G has greater width than Samsung Galaxy S21 FE 5G. |
| Depth | 8.1 mm | 7.9 mm | Samsung Galaxy S21 FE 5G is narrower than OPPO Reno4 Z 5G. |
| Weight | 184 g | 177 g | Samsung Galaxy S21 FE 5G is lighter than OPPO Reno4 Z 5G. |
| Body Colour | Ink black | Dew white | Olive | Graphite | White | Lavender | |
| Protection | - | Dustproof, splashproof, water-resistant | |
| Waterproof (Water-resistant) | - | - | |
| IP rating | - | IP68 | |
| SAR Value | 0.905 W/kg (head), 0.88 W/kg (head), 2.686 W/kg (limb) | 1.48 W/kg (body), 0.952 W/kg (head), 2.91 W/kg (limb) | |
| Connector Type | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C | |
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | LTPS | Infinity-O Dynamic AMOLED 2X | |
| Screen Size (Display Size) | 6.57" | 6.4" | OPPO Reno4 Z 5G has larger screen size than Samsung Galaxy S21 FE 5G. |
| Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 2340 x 1080 pixels | OPPO Reno4 Z 5G has better screen resolution than Samsung Galaxy S21 FE 5G. |
| Display Format | Full HD+ | Full HD+ | |
| Pixel Density | 401 ppi | 401 ppi | Both phones have the same pixel density. |
| Max Brightness | 480 cd/m² | - | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| Contrast Ratio | 1500:1 | - | |
| HDR Technology | - | HDR10+ | |
| Display Enhancement Technology | - | Eye Comfort Shield | |
| Display Refresh Rate | 120 Hz | 120 Hz | Both phones have the same refresh rate. |
| Touch Sampling Rate | 120 Hz | - | |
| Display Features | Dark mode | AOD(Always On Display), Infinity O display, Video Wallpaper | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | Corning Gorilla Glass Victus (scratch resistant glass) |
| PROCESSOR | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| Processor Type (CPU) | MediaTek Dimensity 800 5G | - | |
|---|---|---|---|
| Processor Number | MT6873V | - | |
| Clock Speed | 2 GHz | 2.84 GHz | Samsung Galaxy S21 FE 5G has higher clock speed than OPPO Reno4 Z 5G. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | Mali-G57 MC4 | - |
| MEMORY | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| RAM | LPDDR4X SDRAM - 8 GB | 6 GB | OPPO Reno4 Z 5G has more RAM than Samsung Galaxy S21 FE 5G. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
| User Memory | - | 101.1 GB | |
| Memory Interface | UFS 2.1 | - |
| CAMERA | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 3 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 12 Megapixel | OPPO Reno4 Z 5G has better camera resolution than Samsung Galaxy S21 FE 5G. |
| Sensor Size | 1/2" | 1/1.76" | OPPO Reno4 Z 5G has better camera sensor size than Samsung Galaxy S21 FE 5G. |
| Lens Type | - | Wide-angle lens | |
| Lens Aperture | F/1.7 | F/1.8 | OPPO Reno4 Z 5G has better lens aperture than OPPO Reno4 Z 5G. |
| Lens Construction | 6-element | - | |
| Field of View (FoV) | - | 79 degree(s) | |
| Pixel Size | 0.8 μm | 1.8 μm | Samsung Galaxy S21 FE 5G has larger camera pixel size than OPPO Reno4 Z 5G. |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Samsung Galaxy S21 FE 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | 25 mm | - | |
| Optical Zoom | - | 3x | |
| Digital Zoom | - | 30x | |
| Special Effects | Live HDR, Bokeh effect, Stickers | Face retouch, Grid Line | |
| HDR Mode | - | Auto HDR mode | |
| Camera Modes | Panorama, Time-lapse mode, Slow motion mode, Expert Mode, Portrait, Night, Dazzle Colour Mode, Ultra dark mode | Night mode, portrait mode | |
| Light Source | LED flash | LED flash | |
| Still Image Resolutions | 8000 x 6000 | - | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 30 fps | Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 60 fps, Slo-mo video 1280 x 720 (720p) at 960 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), EIS video stabilisation, Ultra Steady Video, contrast detection auto-focus (CDAF), 4-in-1 pixel binning | Dual recording |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 8 Megapixel | 12 Megapixel | Samsung Galaxy S21 FE 5G has better second camera resolution than OPPO Reno4 Z 5G. |
|---|---|---|---|
| Lens Type (2nd Camera) | Ultra wide-angle lens | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.2 | Both phones have the same second camera lens aperture. |
| Lens Element Qty (2nd Camera) | 5-element | - | |
| Field of View (2nd Camera) | 119 degree(s) | 123 degree(s) | Samsung Galaxy S21 FE 5G has larger second camera lens field of view than OPPO Reno4 Z 5G. |
| Pixel Size (2nd Camera) | 1.12 μm | 1.12 μm | Both phones have the same second camera pixel size. |
| Minimum Focal Length (2nd Camera) | 16 mm | - | |
| Camera Features (2nd Camera) | 5-piece lens | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 2 Megapixel | 8 Megapixel | Samsung Galaxy S21 FE 5G has higher resolution third camera than OPPO Reno4 Z 5G. |
|---|---|---|---|
| Lens Type (3rd Camera) | - | Telephoto lens | |
| Lens Aperture (3rd Camera) | F/2.4 | F/2.4 | Both phones have the same lens aperture of the third camera. |
| Lens Element Qty (3rd Camera) | 3-element | - | |
| Field of View (3rd Camera) | - | 32 degree(s) | |
| Pixel Size (3rd Camera) | 1.75 μm | 1 μm | OPPO Reno4 Z 5G has larger third camera pixel size than Samsung Galaxy S21 FE 5G. |
| Camera Features (3rd Camera) | - | Space Zoom x30 |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | 2 Megapixel | - | |
|---|---|---|---|
| Lens Aperture (4th Camera) | F/2.4 | - | |
| Lens Element Qty (4th Camera) | 3-element | - | |
| Pixel Size (4th Camera) | 1.75 μm | - | |
| Camera Functions (4th Camera) | Monochrome | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 2 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 16 Megapixel | 32 Megapixel | Samsung Galaxy S21 FE 5G has better front camera resolution than OPPO Reno4 Z 5G. |
| Lens Aperture (Front) | F/2.0 | F/2.2 | OPPO Reno4 Z 5G has better front lens aperture than OPPO Reno4 Z 5G. |
| Field of View (Front) | - | 81 degree(s) | |
| Pixel Size (Front) | 1 μm | 0.8 μm | OPPO Reno4 Z 5G has larger front camera pixel size than Samsung Galaxy S21 FE 5G. |
| Focus Adjustment | - | Focus free | |
| Special Effects (Front) | HDR | - | |
| Camera Modes (Front) | Panorama, Time-lapse mode, Slow motion mode, night mode, Expert Mode, Portrait | - | |
| Light Source (Front) | Display flash | - | |
| Still Image Resolutions (Front) | 4608 x 3456 | - | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | - | |
| Camera Features (Front) | 5P lens | - |
| SECOND FRONT CAMERA |
|---|
| Sensor Resolution (2nd Front) | 2 Megapixel | - | |
|---|---|---|---|
| Lens Aperture (2nd Front) | F/2.4 | - | |
| Pixel Size (2nd Front) | 1.75 μm | - | |
| Camera Functions (2nd Front) | 3D depth camera | - | |
| Camera Features (2nd Front) | 3-piece lens | - |
| BATTERY AND CHARGING | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 4500 mAh | Samsung Galaxy S21 FE 5G has larger battery capacity than OPPO Reno4 Z 5G. |
|---|---|---|---|
| Fast Charging Technology | - | Samsung Fast Charging | Samsung Galaxy S21 FE 5G has fast charging technology. |
| Recharge Time (Charging Time) | 116 min | - | |
| Wireless Charging | - | Yes | Samsung Galaxy S21 FE 5G can be charged wirelessly. |
| Wireless Charging Standards | - | Wireless PowerShare | |
| Talk Time | - | 2220 minutes | |
| Run Time Details | - | Talk (LTE): up to 2220 min Active online usage (LTE): up to 13 hrs Active online usage (Wi-Fi): up to 13 hrs Playback (video): up to 16 hrs Playback (audio): up to 79 hrs |
|
| Battery Technology | Lithium Ion | - |
| CELLULAR | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 5G | Both phones have the same mobile network generation. |
| Operating System | ColorOS 7.1 (based on Android 10) | Android 12 | |
| Intelligent Assistant | - | Bixby | |
| Payment Technology | - | Samsung Pay | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE, 5G NR FR1 | 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 12, Band 17, Band 18, Band 19, Band 20, Band 26, Band 28, Band 38, Band 39, Band 40, Band 41, Band 66 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 17, Band 20, Band 26, Band 28, Band 32, Band 38, 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 700a, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700b, FDD 800 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | N1, n3, n5, n7, n8, n20, n28, n38, n41, n77, n78, n79, n40 | N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n78, n40 | |
| 5G NR Frequency | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, TDD TD 3700, TDD TD 3500, TDD TD 4500, TDD 2300 | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.1 | Bluetooth 5.0 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| MEDIA | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), apt-X, LDAC, MID, SBC, apt-X HD | WAV, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, WMV, ASF, 3GP, H.264, H.265, MP4 | MKV, FLV, AVI, 3GP, M4V, WebM, 3G2, MP4 | |
| Sound Enhancements | Hi-Res audio certified, Dirac 2.0 sound effect | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound |
| FEATURES | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, geomagnetic sensor, gravity sensor | Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor, light sensor | |
| Security Devices | Face recognition, fingerprint reader (side) | Fingerprint reader | |
| Additional Phone Features | Multitasking, Fast Charging, OPPO Relax | MIMO technology, Fast Charging, Samsung KNOX, Samsung DeX support, Samsung Smart Switch, Game mode |
| OTHERS | OPPO Reno4 Z 5G | Samsung Galaxy S21 FE 5G |
|---|
| Included Accessories | Headphones, power adapter, SIM card removal tool, USB-C cable, protective case | SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | TUV Rheinland Low Blue Light Certification | IP68 | |
| Max Depth of Water Resistance | - | 1.5 m |
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