In depth comparison and review of Samsung Galaxy S21 FE 5G and Samsung Galaxy S23 Ultra. 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 | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-G990B/DS | SM-S918B/DS | |
| Form Factor | Touch | Touch | |
| Height | 155.7 mm | 163.4 mm | Samsung Galaxy S23 Ultra has greater height than Samsung Galaxy S21 FE 5G. |
| Width | 74.5 mm | 78.1 mm | Samsung Galaxy S23 Ultra has greater width than Samsung Galaxy S21 FE 5G. |
| Depth | 7.9 mm | 8.9 mm | Samsung Galaxy S21 FE 5G is narrower than Samsung Galaxy S21 FE 5G. |
| Weight | 177 g | 233 g | Samsung Galaxy S21 FE 5G is lighter than Samsung Galaxy S21 FE 5G. |
| Body Colour | Olive | Graphite | White | Lavender | Lavender | Cream | Green | Phantom black | |
| Body Material | - | PET film, recycled glass, Armour Aluminium frame | |
| Protection | Dustproof, splashproof, water-resistant | Dustproof, splashproof, water-resistant | |
| Waterproof (Water-resistant) | - | Yes | Samsung Galaxy S23 Ultra is waterproof. |
| IP rating | IP68 | IP68 | |
| Repairability Index | - | 8.2 (out of 10) | |
| SAR Value | 1.48 W/kg (body), 0.952 W/kg (head), 2.91 W/kg (limb) | 1.398 W/kg (body), 0.963 W/kg (head), 2.95 W/kg (limb) | |
| Connector Type | USB Type-C - 24 pin USB-C | USB Type-C - 24 pin USB-C | |
| SIM Card Type (Size) | Nano SIM | Nano SIM, Electronic SIM card (e-SIM) | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | Infinity-O Dynamic AMOLED 2X | Infinity-O Dynamic AMOLED 2X | |
| Screen Size (Display Size) | 6.4" | 6.8" | Samsung Galaxy S23 Ultra has larger screen size than Samsung Galaxy S21 FE 5G. |
| Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 3088 x 1440 pixels | Samsung Galaxy S23 Ultra has better screen resolution than Samsung Galaxy S21 FE 5G. |
| Display Format | Full HD+ | QHD+ | |
| Pixel Density | 401 ppi | 500 ppi | Samsung Galaxy S23 Ultra has better pixel density than Samsung Galaxy S21 FE 5G. |
| Max Brightness | - | 1750 cd/m² | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| Contrast Ratio | - | 3000000:1 | |
| HDR | - | Yes | Samsung Galaxy S23 Ultra has HDR. |
| HDR Technology | HDR10+ | HDR10+ | |
| Display Enhancement Technology | Eye Comfort Shield | Vision Booster technology | |
| Display Refresh Rate | 120 Hz | 120 Hz | Both phones have the same refresh rate. |
| Touch Sampling Rate | - | 240 Hz | |
| Display Features | AOD(Always On Display), Infinity O display, Video Wallpaper | AOD(Always On Display), Video Wallpaper, 100% DCI-P3 | |
| Display Protection (Screen Protector) | Corning Gorilla Glass Victus (scratch resistant glass) | Corning Gorilla Glass Victus 2 (scratch resistant glass) |
| PROCESSOR | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
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| Processor Type (CPU) | - | Qualcomm Snapdragon 8 Gen 2 | |
|---|---|---|---|
| Clock Speed | 2.84 GHz | 3.36 GHz | Samsung Galaxy S23 Ultra has higher clock speed than Samsung Galaxy S21 FE 5G. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| MEMORY | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
|---|
| RAM | 6 GB | LPDDR5 SDRAM - 8 GB | Samsung Galaxy S23 Ultra has more RAM than Samsung Galaxy S21 FE 5G. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 256 GB | Samsung Galaxy S23 Ultra has more internal memory than Samsung Galaxy S21 FE 5G. |
| User Memory | 101.1 GB | 216.6 GB |
| CAMERA | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
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| MAIN CAMERA |
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| Number of Main Cameras | 3 | 4 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 200 Megapixel | Samsung Galaxy S23 Ultra has better camera resolution than Samsung Galaxy S21 FE 5G. |
| Sensor Size | 1/1.76" | - | |
| Lens Type | Wide-angle lens | Wide-angle lens | |
| Lens Aperture | F/1.8 | F/1.7 | Samsung Galaxy S23 Ultra has better lens aperture than Samsung Galaxy S21 FE 5G. |
| Field of View (FoV) | 79 degree(s) | 85 degree(s) | Samsung Galaxy S23 Ultra has larger lens field of view than Samsung Galaxy S21 FE 5G. |
| Pixel Size | 1.8 μm | 0.6 μm | Samsung Galaxy S21 FE 5G has larger camera pixel size than Samsung Galaxy S23 Ultra. |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | Dual OIS (Optical Image Stabilisation) | Both phones have optical image stabilization. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | - | Yes | |
| Optical Zoom | 3x | - | |
| Digital Zoom | 30x | - | |
| Self-Timer Delay | - | Yes | |
| Special Effects | Face retouch, Grid Line | Super HDR, face retouch, Grid Line, selfie colour tone | |
| HDR Mode | Auto HDR mode | Auto HDR mode | |
| Camera Modes | Night mode, portrait mode | Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Portrait, Night, Motion Photo, Mountain, Filter mode, Single Take, Pro Video, Portrait video, Director's View, Expert RAW mode, My Filter mode, Astrolapse | |
| Light Source | LED flash | High CRI 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 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, Super slow motion video 1920 x 1080 (1080p) at 960 fps, 7680 x 4320 (UHD 8K) at 24fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps, 7680 x 4320 (UHD 8K) at 30fps, 3840 x 2160 (4K) HDR10+ at 60 fps, Director's View 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Dual recording | Blink detection, QR-code scanner, RAW image capture, VDIS (Video Digital Image Stabilisation), Tracking AF, Quick Share, Scene Optimiser, Lens smudge, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, backlighting detection, Quick Measure, Zoom-In Mic, HEIF image capture, Take 33MP still photos while playing 8K video, Single Take, AR Doodle, HEVC (High Efficiency Video coding) support, Auto framing, UW shape correction, Auto FPS, object eraser, Digital zoom up to 20x for video, High Bitrate, 360 Audio Recording |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 12 Megapixel | Both phones have the same second camera resolution. |
|---|---|---|---|
| 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. |
| Field of View (2nd Camera) | 123 degree(s) | 120 degree(s) | Samsung Galaxy S21 FE 5G has larger second camera lens field of view than Samsung Galaxy S23 Ultra. |
| Pixel Size (2nd Camera) | 1.12 μm | 1.4 μm | Samsung Galaxy S23 Ultra has larger second camera pixel size than Samsung Galaxy S21 FE 5G. |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 8 Megapixel | 10 Megapixel | Samsung Galaxy S23 Ultra has higher resolution third camera than Samsung Galaxy S21 FE 5G. |
|---|---|---|---|
| Lens Type (3rd Camera) | Telephoto lens | Telephoto lens | |
| Lens Aperture (3rd Camera) | F/2.4 | F/4.9 | Samsung Galaxy S21 FE 5G has better third camera lens aperture than Samsung Galaxy S21 FE 5G. |
| Field of View (3rd Camera) | 32 degree(s) | 11 degree(s) | Samsung Galaxy S21 FE 5G has larger third camera lens field of view than Samsung Galaxy S23 Ultra. |
| Pixel Size (3rd Camera) | 1 μm | 1.12 μm | Samsung Galaxy S23 Ultra has larger third camera pixel size than Samsung Galaxy S21 FE 5G. |
| Optical Zoom | - | 10x | |
| Camera Features (3rd Camera) | Space Zoom x30 | 100x Super Resolution Zoom, Space Zoom |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 10 Megapixel | |
|---|---|---|---|
| Lens Type (4th Camera) | - | Telephoto lens | |
| Lens Aperture (4th Camera) | - | F/2.4 | |
| Field of View (4th Camera) | - | 36 degree(s) | |
| Pixel Size (4th Camera) | - | 1.12 μm | |
| Optical Zoom | - | 3x |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 32 Megapixel | 12 Megapixel | Samsung Galaxy S21 FE 5G has better front camera resolution than Samsung Galaxy S23 Ultra. |
| Lens Aperture (Front) | F/2.2 | F/2.2 | Both phones have the same front camera lens aperture. |
| Field of View (Front) | 81 degree(s) | 80 degree(s) | Samsung Galaxy S21 FE 5G has larger front lens field of view than Samsung Galaxy S23 Ultra. |
| Pixel Size (Front) | 0.8 μm | 1.12 μm | Samsung Galaxy S23 Ultra has larger front camera pixel size than Samsung Galaxy S21 FE 5G. |
| Focus Adjustment | Focus free | Automatic | |
| Camera Features (Front) | - | 2PD AF |
| BATTERY AND CHARGING | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
|---|
| Battery Capacity (Battery Size) | 4500 mAh | 5000 mAh | Samsung Galaxy S23 Ultra has larger battery capacity than Samsung Galaxy S21 FE 5G. |
|---|---|---|---|
| Fast Charging Technology | Samsung Fast Charging | Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Samsung Super Fast Charging, Power Delivery 3.0 | Both phones have fast charging technology. |
| Wireless Charging | Yes | Yes | Both phones can be charged wirelessly. |
| Wireless Charging Standards | Wireless PowerShare | WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare | |
| Talk Time | 2220 minutes | 2940 minutes | Samsung Galaxy S23 Ultra has longer battery life when making calls than Samsung Galaxy S21 FE 5G. |
| 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 |
Talk (4G): up to 2940 min Active online usage (LTE): up to 25 hrs Active online usage (Wi-Fi): up to 25 hrs Playback (wireless video): up to 26 hrs Playback (wireless audio): up to 99 hrs |
| CELLULAR | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 5G | Both phones have the same mobile network generation. |
| Operating System | Android 12 | Android 13 | |
| User Interface | - | Samsung One UI 5.1 | |
| Intelligent Assistant | Bixby | Bixby | |
| Payment Technology | Samsung Pay | Samsung Pay | |
| Navigation | GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
|---|
| 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 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 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 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 13, Band 17, Band 18, Band 19, Band 20, Band 25, 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 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 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, 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, n5, n7, n8, n20, n28, n38, n41, n66, n78, n40 | N1, n2, n3, n5, n7, n8, n20, n28, n38, n41, n66, n75, n77, n78, n40, n25, n12 | |
| 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 1900PCS, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, SDL DL 1500+, TDD TD 3700, TDD TD 3500, TDD 2300, FDD 1900, n12 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac/ax, Wi-Fi 6E | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.3 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Ultra-Wideband (UWB) | - | Yes | Samsung Galaxy S23 Ultra has UWB wireless technology. |
| MEDIA | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
|---|
| 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, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, DSD, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128 | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, 3GP, M4V, WebM, 3G2, MP4 | MKV, FLV, AVI, 3GP, M4V, WebM, 3G2, MP4 | |
| Sound Enhancements | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, Dolby Digital sound, amplify ambient sound |
| FEATURES | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
|---|
| Sensors | Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor, light sensor | Accelerometer, ambient light sensor, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor | |
|---|---|---|---|
| Security Devices | Fingerprint reader | Fingerprint reader (under display), face recognition | |
| Additional Phone Features | MIMO technology, Fast Charging, Samsung KNOX, Samsung DeX support, Samsung Smart Switch, Game mode | S Pen multi-input, Air View, MIMO technology, Screen Write, notification flashlight, Smart Select, Three microphones, Samsung KNOX, Smart View, Live message, Screen off memo, Samsung DeX support, Bixby Vision, Secure Folder function, TalkBack, Dual Audio, Intelligent Performance Enhancer, Samsung Smart Switch, AR Doodle, PENUP, Bixby key, Bluetooth Scalable Codec, Samsung Knox Vault, DisplayPort over USB Type-C, dual stereo speakers tuned by Dolby Atmos, Samsung Seamless Codec, Samsung Wallet |
| OTHERS | Samsung Galaxy S21 FE 5G | Samsung Galaxy S23 Ultra |
|---|
| Included Accessories | SIM card removal tool, USB-C cable | SIM card removal tool, S Pen, USB-C to USB-C cable | |
|---|---|---|---|
| Compliant Standards | IP68 | VDE, IP68, HAC (Hearing Aid Compatible), EcoLogo, IEC 61960, Carbon Trust | |
| Max Depth of Water Resistance | 1.5 m | 1.5 m |
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