Side by side comparison and review of Samsung Galaxy S21 FE 5G and OPPO A77 5G. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-G990B/DS | CPH2339 | |
| Form Factor | Touch | Touch | |
| Height | 155.7 mm | 163.8 mm | OPPO A77 5G has greater height than Samsung Galaxy S21 FE 5G. |
| Width | 74.5 mm | 75.1 mm | OPPO A77 5G has greater width than Samsung Galaxy S21 FE 5G. |
| Depth | 7.9 mm | 7.99 mm | Samsung Galaxy S21 FE 5G is narrower than Samsung Galaxy S21 FE 5G. |
| Weight | 177 g | 190 g | Samsung Galaxy S21 FE 5G is lighter than Samsung Galaxy S21 FE 5G. |
| Body Colour | Olive | Graphite | White | Lavender | Midnight black | Ocean blue | |
| Protection | Dustproof, splashproof, water-resistant | Waterproof, splash-resistant | |
| Waterproof (Water-resistant) | - | Yes | OPPO A77 5G is waterproof. |
| IP rating | IP68 | IPX4 | |
| SAR Value | 1.48 W/kg (body), 0.952 W/kg (head), 2.91 W/kg (limb) | 1.256 W/kg (body), 0.986 W/kg (head), 2.683 W/kg (limb) | |
| Connector Type | 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 | Dual-SIM | |
| SIM Card Configuration Details | - | Micro SIM + nano SIM/microSD |
| DISPLAY | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | Infinity-O Dynamic AMOLED 2X | - | |
| Screen Size (Display Size) | 6.4" | 6.56" | OPPO A77 5G has larger screen size than Samsung Galaxy S21 FE 5G. |
| Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 1612 x 720 pixels | Samsung Galaxy S21 FE 5G has better screen resolution than OPPO A77 5G. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | 401 ppi | 269 ppi | Samsung Galaxy S21 FE 5G has better pixel density than OPPO A77 5G. |
| Aspect Ratio | - | 20:9 | |
| Max Brightness | - | 600 cd/m² | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| HDR Technology | HDR10+ | - | |
| Display Enhancement Technology | Eye Comfort Shield | - | |
| Display Refresh Rate | 120 Hz | 90 Hz | Samsung Galaxy S21 FE 5G has better refresh rate than OPPO A77 5G. |
| Touch Sampling Rate | - | 90 Hz | |
| Display Features | AOD(Always On Display), Infinity O display, Video Wallpaper | 100% DCI-P3, 96% NTSC, 100% sRGB, High brightness mode, Vivid mode | |
| Display Protection (Screen Protector) | Corning Gorilla Glass Victus (scratch resistant glass) | Panda Glass MN228 |
| PROCESSOR | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
|---|
| Processor Type (CPU) | - | MediaTek Dimensity 810 | |
|---|---|---|---|
| Clock Speed | 2.84 GHz | 2.4 GHz | Samsung Galaxy S21 FE 5G has higher clock speed than OPPO A77 5G. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | - | Mali-G57 MC2 |
| MEMORY | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
|---|
| RAM | 6 GB | LPDDR4X SDRAM - 4 GB + up to 3 GB virtual extension | Samsung Galaxy S21 FE 5G has more RAM than OPPO A77 5G. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 64 GB | Samsung Galaxy S21 FE 5G has more internal memory than OPPO A77 5G. |
| User Memory | 101.1 GB | - | |
| Memory Interface | - | UFS 2.2 | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSD, microSDXC - up to 1 TB |
| CAMERA | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 2 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 48 Megapixel | OPPO A77 5G has better camera resolution than Samsung Galaxy S21 FE 5G. |
| Sensor Size | 1/1.76" | 1/1.2" | Samsung Galaxy S21 FE 5G has better camera sensor size than OPPO A77 5G. |
| Sensor Name | - | Samsung S5KGM1ST | |
| Lens Type | Wide-angle lens | - | |
| Lens Aperture | F/1.8 | F/1.7 | OPPO A77 5G has better lens aperture than Samsung Galaxy S21 FE 5G. |
| Lens Construction | - | 6-element | |
| Field of View (FoV) | 79 degree(s) | 80 degree(s) | OPPO A77 5G has larger lens field of view than Samsung Galaxy S21 FE 5G. |
| Pixel Size | 1.8 μm | 0.8 μm | Samsung Galaxy S21 FE 5G has larger camera pixel size than OPPO A77 5G. |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Samsung Galaxy S21 FE 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Focal Length Equivalent to 35mm Camera | - | 25mm | |
| Optical Zoom | 3x | - | |
| Digital Zoom | 30x | - | |
| Special Effects | Face retouch, Grid Line | Stickers | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Night mode, portrait mode | Panorama, Time-lapse mode, Slow motion mode, Expert Mode, Portrait, Night, Macro mode, Extra HD, Text scanner | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 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 | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Functions) | Dual recording | Google Lens |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 2 Megapixel | Samsung Galaxy S21 FE 5G has better second camera resolution than OPPO A77 5G. |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/5" | |
| Lens Type (2nd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.4 | Samsung Galaxy S21 FE 5G has better second camera lens aperture than Samsung Galaxy S21 FE 5G. |
| Lens Element Qty (2nd Camera) | - | 3-element | |
| Field of View (2nd Camera) | 123 degree(s) | 89 degree(s) | Samsung Galaxy S21 FE 5G has larger second camera lens field of view than OPPO A77 5G. |
| Pixel Size (2nd Camera) | 1.12 μm | 1.75 μm | OPPO A77 5G has larger second camera pixel size than Samsung Galaxy S21 FE 5G. |
| Focal Length Equivalent to 35mm Camera | - | 20mm | |
| Camera Functions (2nd Camera) | - | Depth camera |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 8 Megapixel | - | |
|---|---|---|---|
| Lens Type (3rd Camera) | Telephoto lens | - | |
| Lens Aperture (3rd Camera) | F/2.4 | - | |
| Field of View (3rd Camera) | 32 degree(s) | - | |
| Pixel Size (3rd Camera) | 1 μm | - | |
| Camera Features (3rd Camera) | Space Zoom x30 | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 32 Megapixel | 8 Megapixel | Samsung Galaxy S21 FE 5G has better front camera resolution than OPPO A77 5G. |
| Sensor Size (Front) | - | 1/4" | |
| Sensor Name (Front) | - | Sony IMX355 sensor | |
| Lens Aperture (Front) | F/2.2 | F/2.0 | OPPO A77 5G has better front lens aperture than Samsung Galaxy S21 FE 5G. |
| Lens Element Qty (Front) | - | 5-element | |
| Field of View (Front) | 81 degree(s) | 79 degree(s) | Samsung Galaxy S21 FE 5G has larger front lens field of view than OPPO A77 5G. |
| Pixel Size (Front) | 0.8 μm | 1.12 μm | OPPO A77 5G has larger front camera pixel size than Samsung Galaxy S21 FE 5G. |
| Focus Adjustment | Focus free | Focus free | |
| Focal Length Equivalent to 35mm Camera | - | 26mm | |
| Special Effects (Front) | - | Stickers | |
| Camera Modes (Front) | - | Panorama, Time-lapse mode, night mode, Portrait | |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps |
| BATTERY AND CHARGING | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
|---|
| Battery Capacity (Battery Size) | 4500 mAh | 5000 mAh | OPPO A77 5G has larger battery capacity than Samsung Galaxy S21 FE 5G. |
|---|---|---|---|
| Fast Charging Technology | Samsung Fast Charging | SuperVOOC Flash Charge technology | Both phones have fast charging technology. |
| Recharge Time (Charging Time) | - | 69 min | |
| Wireless Charging | Yes | - | Samsung Galaxy S21 FE 5G can be charged wirelessly. |
| Wireless Charging Standards | Wireless PowerShare | - | |
| Standby Time | - | 344 hours | |
| 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 |
Standby (Ultra Power Saving Mode): up to 344 hrs |
| CELLULAR | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 5G | Both phones have the same mobile network generation. |
| Operating System | Android 12 | ColorOS 12.1 (based on Android 12) | |
| Intelligent Assistant | Bixby | - | |
| Payment Technology | Samsung Pay | - | |
| Navigation | GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
|---|
| Data Transmission | 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 8 | Band 1, Band 2, Band 4, Band 5, Band 6, Band 8, Band 19 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 1700, 850, 800, 900, 800 | |
| 4G LTE Band | 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 | 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 | |
| 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 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, 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 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 | |
| 5G NR Band | N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n78, n40 | N1, n3, n5, n7, n8, n20, n28, n38, n41, n77, 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, FDD AWS-3, TDD TD 3500, TDD 2300 | 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 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.3 BLE | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| MEDIA | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
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| Supported Digital Audio Standards | WAV, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID | WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), apt-X, LDAC, IMY, ALAC, OPUS, MID, SBC, apt-X HD | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, 3GP, M4V, WebM, 3G2, MP4 | MKV, FLV, AVI, MOV, WMV, ASF, 3GP, H.264, M4V, TS, M2TS, WebM, H.265, MP4 | |
| Sound Enhancements | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound | - |
| FEATURES | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
|---|
| Sensors | Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor, light sensor | Accelerometer, ambient light sensor, proximity sensor, pedometer, digital compass, geomagnetic sensor, gravity sensor | |
|---|---|---|---|
| Security Devices | Fingerprint reader | Face recognition, fingerprint reader (side) | |
| Security Technology | - | Face Unlock | |
| Additional Phone Features | MIMO technology, Fast Charging, Samsung KNOX, Samsung DeX support, Samsung Smart Switch, Game mode | Fast Charging, Super power saving mode, OTG Reverse Charge, 3 years of Security Updates, 2 years of OS upgrades, ultra linear stereo speakers, Ultra volume mode |
| OTHERS | Samsung Galaxy S21 FE 5G | OPPO A77 5G |
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| Included Accessories | SIM card removal tool, USB-C cable | Protective cover, USB cable, power adapter, SIM card removal tool | |
|---|---|---|---|
| Compliant Standards | IP68 | IPX4 | |
| Max Depth of Water Resistance | 1.5 m | - |
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