In depth comparison and review of Alcatel Idol 5S and Samsung Galaxy S21 Ultra 5G. 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 | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | SM-G998B/DS | |
| Form Factor | Touch | Touch | |
| Height | 149 mm | 161.5 mm | Samsung Galaxy S21 Ultra 5G has greater height than Alcatel Idol 5S. |
| Width | 70.9 mm | 75.6 mm | Samsung Galaxy S21 Ultra 5G has greater width than Alcatel Idol 5S. |
| Depth | 7.37 mm | 8.9 mm | Alcatel Idol 5S is narrower than Alcatel Idol 5S. |
| Weight | 149 g | 227 g | Alcatel Idol 5S is lighter than Alcatel Idol 5S. |
| Body Colour | Crystal black | Phantom silver | Phantom black | Phantom navy | Phantom brown | Phantom titanium | |
| Body Material | Aluminium frame | - | |
| Protection | - | Dustproof, splashproof, water-resistant | |
| Waterproof (Water-resistant) | - | Yes | Samsung Galaxy S21 Ultra 5G is waterproof. |
| IP rating | - | IP68 | |
| SAR Value | - | 1.58 W/kg (body), 0.714 W/kg (head), 2.56 W/kg (limb) | |
| Connector Type | USB Type-C - 24 pin USB-C Headset jack |
USB Type-C - 24 pin USB-C | |
| SIM Card Type (Size) | Nano SIM | Nano SIM, Electronic SIM card (e-SIM) | |
| SIM Card Qty | Single-SIM | Dual-SIM |
| DISPLAY | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| Display Type | - | OLED display | |
|---|---|---|---|
| Display Technology | - | Infinity-O Dynamic AMOLED 2X | |
| Screen Size (Display Size) | 5.2" | 6.8" | Samsung Galaxy S21 Ultra 5G has larger screen size than Alcatel Idol 5S. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 3200 x 1440 pixels | Samsung Galaxy S21 Ultra 5G has better screen resolution than Alcatel Idol 5S. |
| Display Format | Full HD | QHD+ | |
| Pixel Density | - | 515 ppi | |
| Colour Depth | - | 16.7 million colours | |
| HDR | - | Yes | Samsung Galaxy S21 Ultra 5G has HDR. |
| HDR Technology | - | HDR10+ | |
| Display Enhancement Technology | - | Eye Comfort Shield | |
| Display Refresh Rate | - | 120 Hz | |
| Display Features | 2.5D Glass, night mode | Edge Screen, AOD(Always On Display) | |
| Display Protection (Screen Protector) | Fingerprint-resistant oleophobic coating, Dragontrail (scratch resistant glass) | Corning Gorilla Glass Victus (scratch resistant glass) |
| PROCESSOR | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 625 | Samsung Exynos 2100 | |
|---|---|---|---|
| Processor Number | MSM8953 | - | |
| Clock Speed | 2 GHz | 2.9 GHz | Samsung Galaxy S21 Ultra 5G has higher clock speed than Alcatel Idol 5S. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | Qualcomm ADRENO 506 | Mali-G78 MP14 |
| MEMORY | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| RAM | 3 GB | LPDDR5 SDRAM - 12 GB | Samsung Galaxy S21 Ultra 5G has more RAM than Alcatel Idol 5S. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 128 GB | Samsung Galaxy S21 Ultra 5G has more internal memory than Alcatel Idol 5S. |
| User Memory | - | 101.7 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 512 GB | - |
| CAMERA | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 12 Megapixel | Both phones have the same camera resolution. |
| Sensor Size | 1/2.8" | - | |
| Sensor Name | Omnivision OV12870 sensor | - | |
| Lens Type | - | Ultra wide-angle lens | |
| Lens Aperture | F/2.0 | F/2.2 | Alcatel Idol 5S has better lens aperture than Alcatel Idol 5S. |
| Field of View (FoV) | - | 120 degree(s) | |
| Pixel Size | - | 1.4 μm | |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Samsung Galaxy S21 Ultra 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | - | Yes | |
| Optical Zoom | - | 3x | |
| Digital Zoom | - | 100x | |
| Self-Timer Delay | - | Yes | |
| Special Effects | - | Face retouch, Grid Line | |
| HDR Mode | - | Auto HDR mode | |
| 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 | |
| Light Source | Dual LED flash | High CRI LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps | 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 | |
| Camera Features (Functions) | Electronic Image Stabiliser (EIS), Dual-tone Flash, Phase Detect Auto-Focus (PDAF)+Contrast Focus | 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 |
| 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) | 8 Megapixel | 40 Megapixels | Samsung Galaxy S21 Ultra 5G has better front camera resolution than Alcatel Idol 5S. |
| Sensor Size (Front) | 1/3.2" | - | |
| Sensor Name (Front) | Omnivision OV8865 sensor | - | |
| Lens Aperture (Front) | F/2.0 | F/2.2 | Alcatel Idol 5S has better front lens aperture than Alcatel Idol 5S. |
| Field of View (Front) | - | 80 degree(s) | |
| Pixel Size (Front) | - | 0.7 μm | |
| Focus Adjustment | - | Automatic | |
| Light Source (Front) | Flash | - | |
| Camera Features (Front) | - | Phase Detect Auto-Focus (PDAF) |
| BATTERY AND CHARGING | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| Battery Capacity (Battery Size) | 2620 mAh | 5000 mAh | Samsung Galaxy S21 Ultra 5G has larger battery capacity than Alcatel Idol 5S. |
|---|---|---|---|
| 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 | Samsung Galaxy S21 Ultra 5G can be charged wirelessly. |
| Wireless Charging Standards | - | WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare | |
| Standby Time | 753 hours | - | |
| Talk Time | 1200 minutes | 2460 minutes | Samsung Galaxy S21 Ultra 5G has longer battery life when making calls than Alcatel Idol 5S. |
| Run Time Details | Talk (3G): up to 1200 min Standby (3G): up to 753 hrs |
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 |
| CELLULAR | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Samsung Galaxy S21 Ultra 5G has more advanced generation mobile network. |
| Operating System | Android 7.1 Nougat | Android 11 | |
| Intelligent Assistant | Google Assistant | Bixby | |
| Payment Technology | - | Samsung Pay | |
| Navigation | A-GPS | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 2G Band | - | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5 | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850 | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 12, Band 13, Band 17, Band 25, Band 26, 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 700a, FDD 700c, FDD 700b, FDD 1900+, FDD 850+, 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, 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 3700, TDD TD 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac/ax | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 5.2 | |
| NFC | - | Yes | Samsung Galaxy S21 Ultra 5G has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| Supported Digital Audio Standards | PCM, MP3, FLAC, AAC-LC, AAC +, eAAC+, MIDI, AMR-WB, AMR-NB, Vorbis, WAVE | 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 | |
|---|---|---|---|
| Supported Digital Video Standards | - | MKV, FLV, AVI, WMV, ASF, 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 |
| FEATURES | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| Phone Functions | Speakerphone, call timer, conference call, flight mode, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Ambient light sensor, proximity sensor, digital compass, gyro sensor, G-sensor, hall 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 | HD Voice, Private Mode, Dual noise reduction microphones | 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 |
| OTHERS | Alcatel Idol 5S | Samsung Galaxy S21 Ultra 5G |
|---|
| Included Accessories | Data cable, SIM card removal tool | SIM card removal tool, USB-C to USB-C cable | |
|---|---|---|---|
| Compliant Standards | HAC (Hearing Aid Compatible) | IP68, HAC (Hearing Aid Compatible) | |
| Max Depth of Water Resistance | - | 1.5 m |
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