Xiaomi Redmi K90 vs Samsung Galaxy S25 Ultra (12GB RAM + 512GB)
Quick Comparison
Both Xiaomi Redmi K90 and Samsung Galaxy S25 Ultra (12GB RAM + 512GB) comes with same RAM. In terms of display resolution, Samsung Galaxy S25 Ultra (12GB RAM + 512GB) has better resolution of 3120 x 1440 than Xiaomi Redmi K90 which has resolution of 2510 x 1156. Samsung Galaxy S25 Ultra (12GB RAM + 512GB) has more internal memory than Xiaomi Redmi K90
| Name | Xiaomi Redmi K90 | Samsung Galaxy S25 Ultra (12GB RAM + 512GB) |
| RAM | 12 GB | 12 GB |
|---|---|---|
| Display | 6.59 in | 6.9 in |
| Internal Memory | 256 GB | 512 GB |
| Battery | 7100 mAh | 5000 mAh |
| Camera | 50 MP + 50 MP + 8 MP Triple | 200 MP Quad |
| Price | Rs. 35990 | Rs. 126999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is October 27, 2025. The Expected cost of Xiaomi Redmi K90 is Rs. 35990. The launch Date of the second phone is January 22, 2025. The cost of Samsung Galaxy S25 Ultra (12GB RAM + 512GB) is Rs. 126999.
Display comparison
Samsung Galaxy S25 Ultra (12GB RAM + 512GB) has larger screen size of 6.9 inches in comparison to Xiaomi Redmi K90's 6.59 inch screen. Xiaomi Redmi K90 has AMOLED Screen type where as Samsung Galaxy S25 Ultra (12GB RAM + 512GB) has LTPO AMOLED Screen type. Samsung's phone has display density of 498 PPI & Xiaomi's phone has only 419 PPI display density. In terms of screen to body ratio, Samsung's phone has better screen to body ratio of ~ 92.5% than Xiaomi's phone ~ 87.5%. Xiaomi Redmi K90 has 20:9 aspect ratio where as Samsung Galaxy S25 Ultra (12GB RAM + 512GB) has 19.5:9 aspect ratio.
Memory comparison
Both mobiles come with 12 GB RAM Samsung Galaxy S25 Ultra (12GB RAM + 512GB) has more Internal Memory (512 GB) than Xiaomi Redmi K90 (256 GB).
Camera comparison
Samsung Galaxy S25 Ultra (12GB RAM + 512GB)'s 200 MP Quad Rear Camera outclasses Xiaomi Redmi K90's 50 MP + 50 MP + 8 MP Triple Rear Camera in terms of resolution. Xiaomi Redmi K90 will be better choice if you're looking to click lot of selfies as it has better 20 MP Front Camera in comparison to Samsung Galaxy S25 Ultra (12GB RAM + 512GB)'s 12 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 16 and the second one on 15 version.
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Full Comparison
| Name | Xiaomi Redmi K90 | Samsung Galaxy S25 Ultra (12GB RAM + 512GB) |
| General | ||
| Model | K90 | SM-S938B, SM-S938B/DS, SM-S938U, SM-S938U1, SM-S938W, SM-S938N, SM-S9380, SM-S938E, SM-S938E/DS |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | eSIM+Nano SIM |
| SAR | 1.26 W/kg (Head) 0.64 W/kg (Body) | |
| Device Type | Smartphone | Smartphone |
| Release Date | October 27, 2025 | January 22, 2025 |
| In The Box | Handset, Stylus Pen, Data Cable (Type C to C), Sim Ejection Pin | |
| Design | ||
| Dimensions | 75.25 x 157.49 x 8 mm | 77.6 x 162.8 x 8.2 mm |
| Weight | 206 g | 218 g |
| Bezel less | No | |
| Qwerty | No | |
| Colors | Titanium Silverblue, Titanium Black, Titanium Whitesilver, Titanium Gray | |
| Display | ||
| Type | Color AMOLED Screen (1B Colors) | Color LTPO AMOLED Screen (1B Colors) |
| Touch | Yes, 480 Hz Touch Sampling Rate | Yes |
| Size | 6.59 inches, 1156 x 2510 pixels, 120 Hz | 6.9 inches, 1440 x 3120 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 19.5:9 |
| PPI | ~ 419 PPI | ~ 498 PPI |
| Screen to Body Ratio | ~ 87.5% | ~ 92.5% |
| Glass Type | Corning Gorilla Armor 2 | |
| Brightness | 3500nits | |
| Features | HDR10+, 2600 nits (Peak), Always-on Display | |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Curved Display | No | |
| Memory | ||
| RAM | 12 GB | 12 GB |
| Storage | 256 GB | 512 GB |
| Storage Type | UFS 4 | UFS 4 |
| Card Slot | No | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | n1/n3/n5/n7/n8/n28/n66/n38/n40/n41/n48/n77/n78 | TDD Sub6: N38(2600), N40(2300), N41(2500), N77(3700), N78(3500), FDD Sub6: N1(2100), N2(1900), N3(1800), N5(850), N7(2600), N8(900), N12(700), N20(800), N25(1900), N26(850), N28(700), N66(AWS-3) |
| VoLTE | Yes | Yes, Dual Stand-By |
| Vo5G | Yes | |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 7 | Wi-Fi 7, 802.11a/b/g/n/ac/ax/be 2.4GHz+5GHz+6GHz, EHT320, MIMO, 4096-QAM |
| Bluetooth | Yes, v5.4, A2DP, LE | Yes, v5.4, A2DP, LE |
| USB | Yes, USB-C v2.0 | Yes, USB-C v3.2 |
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging, USB Storage |
| IR Blaster | Yes | |
| Performance | ||
| AnTuTu Score | 2,216,272 (Total) (v10) 562,773 (CPU) 880,816 (GPU) 427,168 (Memory) 345,515 (UX) | |
| Extra | ||
| GPS | Yes, with A-GPS. Up to tri-band: GLONASS, BDS, GALILEO, QZSS, NavIC | Yes with A-GPS, Glonass, Beidou, Galileo, QZSS |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass, Color Spectrum | Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Proximity Sensor |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| Water Resistance | Yes, 1.5 m upto 30 min | |
| Splash Resistant | Yes | |
| IP Rating | IP68 | |
| Dust Resistant | No | Yes |
| Extra Features | Photo Assist, Notes Assist, Drawing Assist, Circle to Search, Google Gemini (AI Mobile), 7 Years of Major OS Updates and 7 Years of Security Updates, Titanium Frame, Samsung Care+, Samsung Health, Samsung Wallet, S Pen Included, Glass Front (Corning Gorilla Armor 2), Glass Back (Corning Gorilla Armor 2), Titanium Frame (Grade 5), Stereo Speakers, DisplayPort 1.2, Samsung DeX, Samsung Wireless DeX, Ultra Wideband (UWB) Support | |
| Camera | ||
| Rear Camera | 50 MP (Wide Angle) 50 MP (Telephoto) 8 MP (Wide Angle) | 200 MP ƒ/1.7 (Wide Angle) 24mm (wide), 1/1.3", 0.6µm, Multi-directional PDAF, OIS 10 MP ƒ/2.4 (Telephoto) 67mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x Optical Zoom 50 MP ƒ/3.4 (Telephoto) 111mm (Periscope Telephoto), 1/2.52", 0.7µm, PDAF, OIS, 5x Optical Zoom 50 MP ƒ/1.9 (Ultra Wide) 120˚ (Ultrawide), 0.7µm, Dual Pixel PDAF, Super Steady Video |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes, Laser AF |
| Features | Bixby Vision, Dual Recording, Food, Hyperlapse, Night, Panorama, Photo, Portrait, Portrait Video, Pro, Pro Video, Single Take, Slow Motion, Video, Upto 100X Digital Zoom | |
| Video Recording | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 30/60 fps FHD, 720p @ 1920 fps HD | 8K @ 24/30 fps UHD, 4K @ 120/30/60 fps UHD, 1080p @ 240/30/60 fps FHD |
| Flash | Yes, Dual LED | Yes, LED |
| Front Camera | 20 MP (Wide Angle) Punch Hole | 12 MP ƒ/2.2 (Wide Angle) 26mm (Wide), 1/3.2", 1.12µm, Dual Pixel PDAF Punch Hole, Autofocus, Screen Flash |
| Front Video Recording | 1080p @ 30 fps FHD | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v16 | Android v15 |
| Custom UI | HyperOS 3 | One UI 7 |
| Chipset | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite for Galaxy |
| CPU | 4.32 GHz, Octa Core Processor | 4.47 GHz, Octa Core Processor |
| Core Details | 2x Prime Core@4.32 GHz & 6x Performance Core@3.53 GHz | 2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M |
| GPU | Adreno GPU | Adreno 830 |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | Yes |
| Video | Yes | Yes |
| FM Radio | No | No |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 7100 mAh | 5000 mAh, Li-ion Battery |
| Fast Charging | Yes, 100W Fast charging | Yes, 45W Fast Charging PD3.0, 65% in 30 min |
| Wireless Charging | Yes, 15W | |
| Reverse Charging | Yes, 22.5W | Yes, 10W |
| Reverse Wireless Charging | Yes, 4.5W | |
| Video Playback Time | 31 hours | |