In depth comparison and review of Samsung Galaxy S21 Ultra 5G and Apple iPhone SE (3rd generation). 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 Ultra 5G | Apple iPhone SE (3rd generation) |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-G998B/DS | A2783 | |
| Form Factor | Touch | Touch | |
| Height | 161.5 mm | 138.4 mm | Samsung Galaxy S21 Ultra 5G has greater height than Apple iPhone SE (3rd generation). |
| Width | 75.6 mm | 67.3 mm | Samsung Galaxy S21 Ultra 5G has greater width than Apple iPhone SE (3rd generation). |
| Depth | 8.9 mm | 7.3 mm | Apple iPhone SE (3rd generation) is narrower than Samsung Galaxy S21 Ultra 5G. |
| Weight | 227 g | 144 g | Apple iPhone SE (3rd generation) is lighter than Samsung Galaxy S21 Ultra 5G. |
| Body Colour | Phantom silver | Phantom black | Phantom navy | Phantom brown | Phantom titanium | Starlight | Midnight | Red | |
| Body Material | - | Aluminium, glass | |
| Protection | Dustproof, splashproof, water-resistant | Dustproof, water-resistant, splash-resistant | |
| Waterproof (Water-resistant) | Yes | Yes | Both phones are waterproof. |
| IP rating | IP68 | IEC 60529 IP67 | |
| SAR Value | 1.58 W/kg (body), 0.714 W/kg (head), 2.56 W/kg (limb) | 0.99 W/kg (body), 0.98 W/kg (head) | |
| Connector Type | USB Type-C - 24 pin USB-C | Lightning | |
| SIM Card Type (Size) | Nano SIM, Electronic SIM card (e-SIM) | Nano SIM, Electronic SIM card (e-SIM) | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Samsung Galaxy S21 Ultra 5G | Apple iPhone SE (3rd generation) |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | Infinity-O Dynamic AMOLED 2X | Retina HD display with IPS technology | |
| Screen Size (Display Size) | 6.8" | 4.7" | Samsung Galaxy S21 Ultra 5G has larger screen size than Apple iPhone SE (3rd generation). |
| Screen Resolution (Display Resolution) | 3200 x 1440 pixels | 1334 x 750 pixels | Samsung Galaxy S21 Ultra 5G has better screen resolution than Apple iPhone SE (3rd generation). |
| Display Format | QHD+ | - | |
| Pixel Density | 515 ppi | 326 ppi | Samsung Galaxy S21 Ultra 5G has better pixel density than Apple iPhone SE (3rd generation). |
| Max Brightness | - | 625 cd/m² | |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | - | 1400:1 | |
| HDR | Yes | - | Samsung Galaxy S21 Ultra 5G has HDR. |
| HDR Technology | HDR10+ | - | |
| Display Enhancement Technology | Eye Comfort Shield | Dolby Vision | |
| Display Refresh Rate | 120 Hz | - | |
| Display Features | Edge Screen, AOD(Always On Display) | Display Zoom, Reachability (screen shifting), True Tone display, Wide colour display (P3), Dark mode, Haptic touch, Hybrid Log-Gamma (HLG) | |
| Display Protection (Screen Protector) | Corning Gorilla Glass Victus (scratch resistant glass) | Fingerprint-resistant oleophobic coating |
| PROCESSOR | Samsung Galaxy S21 Ultra 5G | Apple iPhone SE (3rd generation) |
|---|
| Processor Type (CPU) | Samsung Exynos 2100 | Apple A15 Bionic | |
|---|---|---|---|
| Clock Speed | 2.9 GHz | - | |
| Processor Core Qty | 8-core | - | |
| Graphics System (GPU) | Mali-G78 MP14 | - |
| MEMORY | Samsung Galaxy S21 Ultra 5G | Apple iPhone SE (3rd generation) |
|---|
| RAM | LPDDR5 SDRAM - 12 GB | - | |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 64 GB | Samsung Galaxy S21 Ultra 5G has more internal memory than Apple iPhone SE (3rd generation). |
| User Memory | 101.7 GB | - |
| CAMERA | Samsung Galaxy S21 Ultra 5G | Apple iPhone SE (3rd generation) |
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| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 1 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 12 Megapixel | Both phones have the same camera resolution. |
| Lens Type | Ultra wide-angle lens | - | |
| Lens Aperture | F/2.2 | F/1.8 | Apple iPhone SE (3rd generation) has better lens aperture than Samsung Galaxy S21 Ultra 5G. |
| Lens Construction | - | 6-element | |
| Field of View (FoV) | 120 degree(s) | - | |
| Pixel Size | 1.4 μm | - | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | Both phones have optical image stabilization. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Optical Zoom | 3x | - | |
| Digital Zoom | 100x | 5x | Samsung Galaxy S21 Ultra 5G has better digital zoom than Apple iPhone SE (3rd generation). |
| Self-Timer Delay | Yes | - | |
| Special Effects | Face retouch, Grid Line | Natural, Studio, Contour, Stage, Stage Mono, High‑Key Mono | |
| HDR Mode | Auto HDR mode | Smart HDR | |
| Camera Modes | 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, Night, Motion Photo, Mountain, Single Take, Pro Video, Director's View | Burst mode, Panorama, Live Photos, Timelapse video, Portrait mode with advanced bokeh and Depth Control, Portrait Lighting, wide colour capture for photos and Live Photos | |
| Light Source | High CRI LED flash | True Tone LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, 7680 x 4320 (UHD 8K) at 24fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, 3840 x 2160 (4K) at 24 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps | |
| Camera Features (Functions) | Playback zoom, blink detection, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, Scene Optimiser, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, Quick Measure, Zoom-In Mic, Space Zoom, Take 33MP still photos while playing 8K video, Hybrid Optic Zoom 3x, Super Resolution Zoom up to 30x, Digital zoom up to 12x for video | Sapphire crystal lens cover, Cinematic video stabilisation, Focus Pixels, Cinematic video stabilisation, Playback zoom, geotagging, Stereo Recording, Continuous autofocus video, 8MP still photos recording 4K video, Time‑lapse video with stabilisation, Slow Sync, Advanced red-eye correction, Optical image stabilization for video, Extended dynamic range for video, HEIF image capture, Digital zoom up to 3x for video, QuickTake video, Deep Fusion, Photographic Styles |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 108 Megapixel | - | |
|---|---|---|---|
| Sensor Size (2nd Camera) | 1/1.33" | - | |
| Lens Type (2nd Camera) | Wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/1.8 | - | |
| Field of View (2nd Camera) | 83 degree(s) | - | |
| Pixel Size (2nd Camera) | 0.8 μm | - | |
| Camera Features (2nd Camera) | Phase Detect Auto-Focus (PDAF), OIS (Optical Image Stabilisation) | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 10 Megapixel | - | |
|---|---|---|---|
| Lens Type (3rd Camera) | Telephoto lens | - | |
| Lens Aperture (3rd Camera) | F/2.4 | - | |
| Field of View (3rd Camera) | 35 degree(s) | - | |
| Pixel Size (3rd Camera) | 1.22 μm | - | |
| Camera Features (3rd Camera) | Dual Pixel AF | - |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | 10 Megapixel | - | |
|---|---|---|---|
| Lens Type (4th Camera) | Telephoto lens | - | |
| Lens Aperture (4th Camera) | F/4.9 | - | |
| Field of View (4th Camera) | 10 degree(s) | - | |
| Pixel Size (4th Camera) | 1.22 μm | - | |
| Camera Features (4th Camera) | Dual Pixel AF | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 40 Megapixels | 7 Megapixel | Samsung Galaxy S21 Ultra 5G has better front camera resolution than Apple iPhone SE (3rd generation). |
| Lens Aperture (Front) | F/2.2 | F/2.2 | Both phones have the same front camera lens aperture. |
| Field of View (Front) | 80 degree(s) | - | |
| Pixel Size (Front) | 0.7 μm | - | |
| Focus Adjustment | Automatic | - | |
| Special Effects (Front) | - | Natural, Studio, Contour, Stage, Stage Mono, High‑Key Mono | |
| HDR Mode (Front) | - | Auto HDR mode | |
| Camera Modes (Front) | - | Burst mode, Live Photos, Portrait mode with advanced bokeh and Depth Control, Portrait Lighting, wide colour capture for photos and Live Photos | |
| Light Source (Front) | - | Retina Flash | |
| Video Resolutions (Front) | - | 1280 x 720 (720p), 1920 x 1080 (1080p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps | |
| Camera Features (Front) | Phase Detect Auto-Focus (PDAF) | Auto image stabilisation, Cinematic video stabilisation, QuickTake video, Deep Fusion |
| BATTERY AND CHARGING | Samsung Galaxy S21 Ultra 5G | Apple iPhone SE (3rd generation) |
|---|
| Battery Capacity (Battery Size) | 5000 mAh | - | |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Samsung Super Fast Charging, Power Delivery 3.0 | - | Samsung Galaxy S21 Ultra 5G has fast charging technology. |
| Wireless Charging | Yes | Yes | Both phones can be charged wirelessly. |
| Wireless Charging Standards | WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare | Qi | |
| Talk Time | 2460 minutes | - | |
| Run Time Details | Talk (4G): up to 2460 min Active online usage (LTE): up to 18 hrs Active online usage (Wi-Fi): up to 18 hrs Playback (wireless video): up to 22 hrs Playback (wireless audio): up to 81 hrs |
Playback (audio): up to 50 hrs Playback (video): up to 15 hrs Playback (streamed video): up to 10 hrs |
|
| Battery Technology | - | Lithium Ion |
| CELLULAR | Samsung Galaxy S21 Ultra 5G | Apple iPhone SE (3rd generation) |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 5G | Both phones have the same mobile network generation. |
| Operating System | Android 11 | iOS 15 | |
| Intelligent Assistant | Bixby | Siri | |
| Payment Technology | Samsung Pay | Apple Pay | |
| Navigation | GPS, GLONASS, BeiDou, Galileo | GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | Samsung Galaxy S21 Ultra 5G | Apple iPhone SE (3rd generation) |
|---|
| Data Transmission | FDD-LTE, TDD-LTE, 5G NR FR1 | EDGE, HSPA+, LTE, DC-HSDPA, LTE Advanced, VoLTE, FDD-LTE, TDD-LTE, VoWiFi, LAA, 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 5, Band 8, Band 10 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 850, 900, 1700 EAWS | |
| 4G LTE Band | 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 | 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 30, Band 32, Band 34, Band 38, Band 39, Band 40, Band 41, Band 42, Band 46, Band 48, 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 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 | 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 2300 WCS, FDD 1500 L, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 3500, TDD 5150, TDD 3600, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n77, n78, n40 | N1, n2, n3, n5, n7, n8, n20, n28, n38, n41, n66, n77, n78, n79, n40, n25, n12, n48, n30 | |
| 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 3700, 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, TDD TD 3700, TDD TD 3500, TDD TD 4500, TDD 2300, FDD 1900, n12, TDD 3500, FDD 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac/ax | IEEE 802.11ax | |
| Bluetooth | Bluetooth 5.2 | Bluetooth 5.0 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| MEDIA | Samsung Galaxy S21 Ultra 5G | Apple iPhone SE (3rd generation) |
|---|
| Supported Digital Audio Standards | WAV, WMA, 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 | Audible, MP3, FLAC, Apple Lossless, AC-3, AAC-LC, LPCM, HE-AAC, Audible AAX, Audible AAX+, protected AAC, EAC3, HE-AAC v2 | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 | M-JPEG, H.264, HEVC, MPEG-4 Part 2, HEIF | |
| 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 Digital sound | |
| Video Enhancements | - | HDR10, Hybrid Log-Gamma (HLG) |
| FEATURES | Samsung Galaxy S21 Ultra 5G | Apple iPhone SE (3rd generation) |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor | Accelerometer, ambient light sensor, proximity sensor, 3-axis gyro sensor, digital compass, barometer | |
| Security Devices | Fingerprint reader (under display), face recognition | Fingerprint reader | |
| Additional Phone Features | Air View, MIMO technology, Smart Select, Samsung KNOX, Smart View, Live message, Screen off memo, Bixby Vision, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, AR Doodle, PENUP, Bixby key, Samsung Knox Vault, Private Share function, Enhanced Game Booster, Air Command | MIMO technology, Apple TV support (2nd or later), AirPlay Mirroring, Third‑generation Neural Engine, Express Transit cards with power reserve, 4K HDR AirPlay Mirroring, FaceTime HD (1080p), 16‑core Neural Engine |
| OTHERS | Samsung Galaxy S21 Ultra 5G | Apple iPhone SE (3rd generation) |
|---|
| Included Accessories | SIM card removal tool, USB-C to USB-C cable | Lightning to USB-C cable | |
|---|---|---|---|
| Compliant Standards | IP68, HAC (Hearing Aid Compatible) | IEC 60529 IP67, HAC (Hearing Aid Compatible) | |
| Max Depth of Water Resistance | 1.5 m | 1 m | |
| Max Operating Temperature | - | 35 °C | |
| Min Operating Temperature | - | 0 °C | |
| Humidity Range Operating | - | 5 - 95% (non-condensing) |
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