Xiaomi 18 Ultra has better RAM than Xiaomi Redmi K100 Pro Max. Xiaomi 18 Ultra has more internal memory than Xiaomi Redmi K100 Pro Max
| Name | Xiaomi Redmi K100 Pro Max | Xiaomi 18 Ultra |
| RAM | 12 GB | 16 GB |
|---|---|---|
| Display | 6.9 in | 6.9 in |
| Internal Memory | 256 GB | 512 GB |
| Battery | 9070 mAh | 7000 mAh |
| Camera | 200 MP + 50 MP + 50 MP Triple | 200 MP + 200 MP + 50 MP Triple |
| Price | Rs. 89999 | Rs. 119990 |
The launch Date of the first phone is August 11, 2026. The Expected cost of Xiaomi Redmi K100 Pro Max is Rs. 89999. The launch Date of the second phone is expected to be February 28, 2027 (Expected). The Expected cost of Xiaomi 18 Ultra is Rs. 119990.
Xiaomi Redmi K100 Pro Max has AMOLED Screen type where as Xiaomi 18 Ultra has LTPO AMOLED Screen type. Both have same 416 PPI. In terms of screen to body ratio, Xiaomi 18 Ultra has better screen to body ratio of ~ 92.3% than Xiaomi Redmi K100 Pro Max's ~ 91.5%. Both phones have same aspect ratio of 20:9.
Xiaomi 18 Ultra's larger 16 GB RAM is better for playing games and all with respect to Xiaomi Redmi K100 Pro Max's lower 12 GB RAM. Xiaomi 18 Ultra has more Internal Memory (512 GB) than Xiaomi Redmi K100 Pro Max (256 GB).
They both have the same 200 MP + 50 MP + 50 MP Triple Rear Camera. Xiaomi 18 Ultra will be better choice if you're looking to click lot of selfies as it has better 50 MP Front Camera in comparison to Xiaomi Redmi K100 Pro Max's 32 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 16 and the second one on 17 version.
| Name | Xiaomi Redmi K100 Pro Max | Xiaomi 18 Ultra |
| General | ||
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano SIM | eSIM+eSIM SIM |
| eSIM Support | Yes | |
| Device Type | Smartphone | Smartphone |
| Release Date | August 11, 2026 | February 28, 2027 (Expected) |
| Design | ||
| Dimensions | 78 x 163.5 x 8.5 mm | |
| Weight | 238 g | |
| Bezel less | Yes | |
| Qwerty | No | |
| Colors | Black, White, Blue, Red (Burgundy) | |
| Display | ||
| Type | Color AMOLED Screen (68 B) | Color LTPO AMOLED Screen (68B) |
| Touch | Yes | Yes, 300 Hz Touch Sampling Rate |
| Size | 6.9 inches, 1200 x 2608 pixels, 185 Hz | 6.9 inches, 1200 x 2608 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 416 PPI | ~ 416 PPI |
| Screen to Body Ratio | ~ 91.5% | ~ 92.3% |
| Glass Type | Xiaomi Dragon Crystal Glass | |
| Brightness | 4500 nits (peak) | 5000 nits (peak) |
| HDR Support | Yes, HDR10+, Dolby Vision | |
| Adaptive Refresh Rate | Yes, LTPO | Yes, LTPO |
| Features | Dolby Vision, HDR Vivid, HDR10+, BT.2020 | 1132 nits max brightness (measured) |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Curved Display | Yes | |
| Memory | ||
| RAM | 12 GB | 16 GB |
| RAM Type | LPDDR5X | |
| Storage | 256 GB | 512 GB |
| Storage Type | UFS 4.1 | UFS 4.1 |
| Card Slot | No | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Vo5G | Yes | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 7 | WiFi 6 support |
| Bluetooth | Yes, v6.0, A2DP, LE, aptX HD | Yes, v6.0 |
| USB | Yes, USB-C | Yes, USB-C v3.2 |
| USB Features | USB Tethering, USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| IR Blaster | Yes | Yes |
| Performance | ||
| Geekbench Score | 2,960 (Single Core) | |
| Extra | ||
| GPS | with GPS, Galileo, GLONASS, Beidou, NAVIC | Yes |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Proximity, Gyro, Compass | Accelerometer, Proximity, Gyro, Compass, Barometer |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| Water Resistance | Yes, 1.5 m upto 30 min | Yes, 6 m upto 30 min |
| IP Rating | IP68/IP69 | IP69 |
| Dust Resistant | Yes | Yes |
| Camera | ||
| Rear Camera | 200 MP ƒ/1.7 (Wide Angle) 24mm (wide), 0.5µm, PDAF, OIS 50 MP ƒ/3 (Telephoto) 115mm (periscope telephoto), 1/2.75", 0.64µm, PDAF, OIS, 5x optical zoom 50 MP ƒ/2.4 (Ultra Wide) 18mm, 102˚ (ultrawide), 1/2.88", 0.61µm | 200 MP (Wide Angle) 200 MP (Telephoto) 50 MP (Ultra Wide) |
| Camera Sensor | LYT-900 | |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes, Laser AF |
| Features | Color spectrum sensor, HDR, panorama | Laser AF, color spectrum sensor, Leica lenses, HDR, panorama |
| Video Recording | 4K @ 60 fps UHD, 1080p @ 60 fps FHD | 8K @ 30 fps UHD, 1080p, 4K |
| Flash | Yes, LED | Yes, Dual LED |
| Front Camera | 32 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus, Screen Flash | 50 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus, Screen Flash |
| Front Video Recording | 4K @ 30 fps UHD, 1080p @ 30 fps FHD | 4K @ 30 fps UHD, 1080p @ 30 fps FHD |
| Front Camera Features | HDR, panorama | HDR, panorama |
| Technical | ||
| OS | Android v16 | Android v17 |
| Custom UI | HyperOS 3 | Xiaomi HyperOS 4 |
| Chipset | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Elite Gen 6 |
| CPU | 4.6 GHz, Octa Core Processor | Octa Core Processor |
| Core Details | 2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M | |
| Fabrication Node | 3nm | 3 nm |
| GPU | Adreno 840 | |
| NPU | Qualcomm Hexagon NPU | |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, FLAC, APE, AAC, OGG, WAV, WMA, AMR, AWB | MP3, FLAC, APE, AAC, OGG, WAV, WMA, AMR, AWB |
| Video | MP4, MKV, AVI, WMV, WEBM, 3GP, ASF playback | MP4, MKV, WEBM, 3GP, TS, HDR10+, Supports HDR Display When Playing HDR10+, Dolby Vision, HDR Vivid Video Content |
| FM Radio | No | No |
| Speaker Type | Stereo | |
| Audio Features | 4-Mic Array, 24-bit/192kHz Hi-Res & Hi-Res Wireless Audio. Qualcomm XPAN (24-bit/96kHz Audio), Dolby Atmos | |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 9070 mAh | 7000 mAh |
| Fast Charging | Yes, 100W Fast Charging | Yes, 100W |
| Wireless Charging | Yes, 50W | Yes, 50W |
| Reverse Charging | Yes | Yes, 22.5W |
| Reverse Wireless Charging | Yes, 22.5W | Yes, 10W |