Side-by-side technical data
itel S25 Ultra vs Xiaomi Redmi 15 4G
Comparison between itel S25 Ultra and Xiaomi Redmi 15 4G: camera, battery, fast charging, display, performance and colors, side by side. More phones from itel and Xiaomi.
The verdict
Your pick: Xiaomi Redmi 15 4G, ahead on Performance & hardware, Connectivity and Battery & charging. Unless Design & display decides it for you.
| Category | S25 Ultra | Redmi 15 4G |
|---|---|---|
| Design & display | 7.7 | 5.9 |
| Performance & hardware | 4.4 | 4.9 |
| Camera | 4.1 | 3.8 |
| Connectivity | 5.3 | 5.8 |
| Battery & charging | 5.3 | 6.3 |
Which one is for you?
itel S25 Ultra, if you care about…
- Display Technology
- AMOLED
- against IPS LCD
- Maximum Storage Capacity
- 512 GB
- against 256 GB
- Peak Display Brightness
- 1,400 nits
- against 700 nits
- Display Pixel Density
- 393 ppi
- against 374 ppi
Xiaomi Redmi 15 4G, if you care about…
- Battery Capacity
- 7,000 mAh
- against 5,000 mAh
- Display Refresh Rate
- 144 Hz
- against 120 Hz
- Fast Charge Power
- 33 W
- against 18 W
- Battery Type
- Si-Carbon Li-Ion
- against Li-Polymer
Specification comparison
Performance
| Specification | S25 Ultra | Redmi 15 4G |
|---|---|---|
| Processor Model | Unisoc T620 | Qualcomm Snapdragon 685 |
| Processor Process Size | 12 nm | 6 nm Best value |
| Graphics GPU | Mali-G57 MP1 | Qualcomm Adreno 610 |
| Storage Type | UFS 2.2 | UFS 2.2 |
| Maximum CPU Clock | 2.2 GHz | 2.8 GHz Best value |
| Maximum Storage Capacity | 512 GB Best value | 256 GB |
| AnTuTu Score | 328,000 | 338,000 Best value |
| Geekbench 6 Single-Core | 497 Best value | 473 |
| Geekbench 6 Multi-Core | 1,541 Best value | 1,510 |
| CPU Description | Octa-core CPU with 2 Cortex-A75 cores at 2.2 GHz and 6 Cortex-A55 cores at up to 1.8 GHz. | Octa-core CPU with 4 Cortex-A73 cores at 2.8 GHz and 4 Cortex-A53 cores at 1.9 GHz. |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 8 GB | 8 GB |
| RAM Type | LPDDR4X | LPDDR4X |
| Expandable Storage | Yes | Yes |
| AnTuTu version | v10 | v10 |
Design
| Specification | S25 Ultra | Redmi 15 4G |
|---|---|---|
| Body Colors | Black, Titanium, Blue, Grey, Cyan | Black, Grey, Purple, Blue, Silver |
| Body Thickness | 6.9 mm Best value | 8.6 mm |
| Body Width | 76.4 mm | 82.1 mm |
| Body Height | 164.2 mm | 171.1 mm |
| Weight | 163 g Best value | 224 g |
| Usable Surface | — | 83.2 % |
| Body Materials | Titanium Best value | Plastic |
| Resistance Features | IP64 | IP64 |
| Drop Resistance Class | — | A |
| Repairability Class | — | C |
| Drop Test Count | — | 270 |
Battery
| Specification | S25 Ultra | Redmi 15 4G |
|---|---|---|
| Battery Efficiency Rating | — | B |
| Battery Capacity | 5,000 mAh | 7,000 mAh Best value |
| Battery Type | Li-Polymer | Si-Carbon Li-Ion Best value |
| Fast Charge Power | 18 W | 33 W Best value |
| Battery Features | Fast Charging, Bypass Charging, Non-Removable, Battery Level Indicator, Rechargeable | Fast Charging, Non-Removable, Battery Level Indicator, Charger Included, Rechargeable |
| Battery Endurance | — | 62 h |
| Charge cycles | — | 1,000 |
| Reverse wireless charging power | — | 18 W |
Display
| Specification | S25 Ultra | Redmi 15 4G |
|---|---|---|
| Display Aspect Ratio | 20:9 | 19.5:9 |
| Display Technology | AMOLED Best value | IPS LCD |
| Peak Display Brightness | 1,400 nits Best value | 700 nits |
| Display Diagonal | 6.78″ | 6.9″ Best value |
| Display Horizontal Resolution | 1,080 px | 1,080 px |
| Display Vertical Resolution | 2,436 px Best value | 2,340 px |
| Display Pixel Density | 393 ppi Best value | 374 ppi |
| Display Refresh Rate | 120 Hz | 144 Hz Best value |
| Touch Sampling Rate | 1,500 Hz Best value | 288 Hz |
| Display Contrast Ratio | 5,000,000 :1 | — |
| Display Features | Gorilla Glass 7i, Hole-Punch Notch, 2160Hz PWM, DCI-P3, 10-Bit Panel, Dual-Edge Display, Capacitive Touch, Multi-Touch, Frameless, Always-On Display | Hole-Punch Notch, Mohs Level 6, TÜV Rheinland Low Blue Light, TÜV Rheinland Flicker-Free Certified, TÜV Rheinland Eye Comfort Certification, DCI-P3, Scratch Resistant, Capacitive Touch, Multi-Touch, Frameless |
Sensors
| Specification | S25 Ultra | Redmi 15 4G |
|---|---|---|
| Fingerprint Sensor Placement | Under Display | Side |
Sensor
| Specification | S25 Ultra | Redmi 15 4G |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Compass, Gyroscope, Light Sensor, Proximity Sensor | Fingerprint Sensor, Accelerometer, Compass, Gyroscope, Light Sensor, Virtual Proximity Sensing, Cooling System |
Software
| Specification | S25 Ultra | Redmi 15 4G |
|---|---|---|
| Operating System | Android 14 | Android 15 |
| OS Family | Android | Android |
| OS Version | 14 | 15 Best value |
| OS Update Support | 7 years Best value | 5 years |
| Google Services | Yes | Yes |
Connectivity
| Specification | S25 Ultra | Redmi 15 4G |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM Dual Standby, Dual SIM | Dual Nano-SIM, Dual SIM Dual Standby |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B1, 3G UMTS B5, 3G UMTS B8, 3G UMTS 2100, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B8, 4G LTE B38, 4G LTE B40, 4G LTE B41 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B1, 3G UMTS B5, 3G UMTS B8, 3G UMTS B6, 3G UMTS B7, 3G UMTS B9, 3G UMTS B10, 3G UMTS B11, 3G UMTS B12, 3G UMTS B13, 3G UMTS B17, 3G UMTS B20, 3G UMTS B21, 3G UMTS B28A, 3G UMTS B28B, 3G UMTS B32, 3G UMTS B38, 3G UMTS B40, 3G UMTS B41, 3G UMTS B42, 3G UMTS B43, 3G UMTS B48, 3G UMTS B66, 3G UMTS B77, 3G UMTS B78, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B20, 4G LTE B28A, 4G LTE B28B, 4G LTE B38, 4G LTE B40, 4G LTE B41, 4G LTE B2, 4G LTE B4 |
| Cellular Technologies | GSM, HSPA, UMTS, LTE | GSM, HSPA, LTE |
| Wi-Fi Standards | Wi-Fi 802.11a/b/g, Wi-Fi 802.11 b/g/n, Wi-Fi 5 (802.11ac) | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 802.11a/b/g |
| Wi-Fi Features | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.0 |
| Bluetooth Profiles | A2DP, LE | A2DP, LE |
| Navigation Systems | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| Connectivity Features | Infrared, NFC, USB Type-C, USB 2.0, USB Charging, USB Mass Storage, USB Host 2.0, Computer Sync, OTA Sync, Tethering | Virtual Proximity Sensing, Infrared, NFC, USB Type-C, Computer Sync, Tethering, VoLTE, USB Charging, USB Mass Storage, USB Host 2.0, USB OTG, USB 2.0 |
| USB Version | USB 2.0 | USB 2.0 |
| Max. download speed | 300 Mbps | 390 Mbps Best value |
| Max. upload speed | 150 Mbps | 150 Mbps |
Audio
| Specification | S25 Ultra | Redmi 15 4G |
|---|---|---|
| Audio Features | DTS, DTS:X, Noise-Cancellation Microphone, Stereo Speakers | Stereo Speakers, Dolby Atmos, A2DP, LE |
Technical
| Specification | S25 Ultra | Redmi 15 4G |
|---|---|---|
| Model numbers | S686LN | 24129PN74G, 25062RN2DE, 25062RN2DA |
