In depth comparison and review of HTC U Ultra and Xiaomi Redmi 4X. 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 | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 145.99 mm | 139.24 mm | HTC U Ultra has greater height than Xiaomi Redmi 4X. |
| Width | 72.9 mm | 69.96 mm | HTC U Ultra has greater width than Xiaomi Redmi 4X. |
| Depth | 7.99 mm | 8.65 mm | HTC U Ultra is narrower than HTC U Ultra. |
| Weight | 145 g | 146 g | HTC U Ultra is lighter than HTC U Ultra. |
| Body Colour | Brilliant black | Black | |
| Body Material | Metal | Metal | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.48 W/kg (body), 0.4 W/kg (head) | 1.5 W/kg (body), 0.583 W/kg (head) | |
| Connector Type | Headset jack - mini-phone 3.5mm USB Type-C - 24 pin USB-C |
Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Micro SIM, nano SIM | |
| SIM Card Qty | Single-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Micro SIM + nano SIM/microSD |
| DISPLAY | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| Display Type | LCD display | - | |
|---|---|---|---|
| Display Technology | Super LCD | - | |
| Screen Size (Display Size) | 5.2" | 5" | HTC U Ultra has larger screen size than Xiaomi Redmi 4X. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 1280 x 720 pixels | HTC U Ultra has better screen resolution than Xiaomi Redmi 4X. |
| Display Format | Full HD | HD | |
| Pixel Density | 428 ppi | - | |
| Max Brightness | - | 450 cd/m² | |
| Contrast Ratio | - | 1000:1 | |
| Display Features | - | 2.5D Glass, Night Display, Reading mode, Colour temperature adjustment | |
| Display Protection (Screen Protector) | Corning Gorilla Glass (scratch resistant glass) | Corning Gorilla Glass (scratch resistant glass) |
| PROCESSOR | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| Processor Type (CPU) | MediaTek Helio P10 | Qualcomm Snapdragon 435 | |
|---|---|---|---|
| Clock Speed | 2 GHz | 1.4 GHz | HTC U Ultra has higher clock speed than Xiaomi Redmi 4X. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | Yes | Both phones have 64-bit architecture. |
| Graphics System (GPU) | - | Qualcomm ADRENO 505 |
| MEMORY | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| RAM | 3 GB | 3 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 32 GB | Both phones have the same internal memory capacity. |
| User Memory | 22.8 GB | - | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 2 TB | microSDHC, microSDXC - up to 128 GB |
| CAMERA | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution | 16 Megapixel | 13 Megapixel | HTC U Ultra has better camera resolution than Xiaomi Redmi 4X. |
| Sensor Type | BSI | - | |
| Lens Aperture | F/2.0 | F/2.0 | Both phones have the same camera lens aperture. |
| Lens Construction | - | 5-element | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | HTC U Ultra has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Minimum Focal Length (Focal Distance) | 28 mm | - | |
| Special Effects | - | HDR | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Burst mode, Panorama, Pro mode, Continuous shot, HYPERLAPSE, RAW mode | Burst mode, Panorama | |
| Face Recognition (Face ID) | Face detection | Face recognition | Both phones have face detection. |
| Light Source | Dual LED flash | LED light | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), Video Pic | Phase Detect Auto-Focus (PDAF) |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 16 Megapixel | 5 Megapixel | HTC U Ultra has better front camera resolution than Xiaomi Redmi 4X. |
| Sensor Type (Front) | BSI | - | |
| Lens Type (Front) | Wide-angle lens | - | |
| Lens Aperture (Front) | F/2.0 | F/2.2 | HTC U Ultra has better front lens aperture than HTC U Ultra. |
| Focus Adjustment | Automatic | - | |
| Min Focal Length (Front) | 26.5 mm | - | |
| Special Effects (Front) | Live make-up | - | |
| HDR Mode (Front) | Auto HDR mode | - | |
| Camera Modes (Front) | Tap to focus, selfie panorama, Auto selfie (smile selfie, still selfie) | Beautify Selfie mode | |
| Face Recognition (Face ID) | - | Face recognition | Xiaomi Redmi 4X has face detection. |
| Video Resolutions (Front) | 1920 x 1080 (1080p) | - | |
| Camera Features (Front) | HTC UltraPixel Camera, Voice selfie, Self timer up to 10 seconds | - |
| BATTERY AND CHARGING | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| Battery Capacity (Battery Size) | 2500 mAh | 4100 mAh | Xiaomi Redmi 4X has larger battery capacity than HTC U Ultra. |
|---|---|---|---|
| Standby Time | 427.54 hours | 432 hours | Xiaomi Redmi 4X has longer standby time than HTC U Ultra. |
| Talk Time | 912 minutes | 2160 minutes | Xiaomi Redmi 4X has longer battery life when making calls than HTC U Ultra. |
| Run Time Details | Talk (3G): up to 912 min Standby (3G): up to 427.54 hrs |
Talk: up to 2160 min Playback (video): up to 15 hrs Gaming: up to 13 hrs Standby (LTE): up to 432 hrs Playback (audio): up to 87 hrs Reading: up to 26 hrs Navigation: up to 15 hrs |
| CELLULAR | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 6.0 (Marshmallow) | - | |
| User Interface | HTC Sense | MIUI 8 | |
| Intelligent Assistant | HTC Sense Companion | - | |
| Navigation | GPS, GLONASS | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE Advanced, VoLTE, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 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 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 850, 900 | |
| 4G LTE Band | Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40 | Band 1, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 38, Band 40 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300 | FDD 2100, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, TDD 2600, TDD 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | Infrared (IrDA), IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 4.1 | |
| Bluetooth Profiles | - | HID | |
| NFC | Yes | - | HTC U Ultra has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| Supported Digital Audio Standards | WAV, AAC, MP3, FLAC, OGG, M4A, MID | WAV, AAC, PCM, AMR, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), DSD, AMR-WB, AMR-NB | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, MPEG-4, 3GP, TS, WebM | MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265 | |
| Sound Enhancements | HTC BoomSound Hi-Fi Edition | - |
| FEATURES | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Ambient light sensor, proximity sensor, digital compass, magnetometer, gyro sensor, G-sensor | Accelerometer, ambient light sensor, proximity sensor, gyro sensor | |
| Security Devices | Fingerprint reader | Fingerprint reader | |
| Additional Phone Features | AirPlay wireless streaming, sharing media via DLNA, Wi-Fi Miracast, Noise Cancellation Technology, Flip to Mute function, Power Saving Mode, Wi-Fi Calling, Pocket mode, Hi-Res Audio, Motion Launch, Android Sensor Hub, HTC Connect, Extreme power saving mode, Hi-Res audio stereo recording, HTC Usonic, Quiet ring on pick up | Infrared remote control |
| OTHERS | HTC U Ultra | Xiaomi Redmi 4X |
|---|
| Included Accessories | Power adapter | USB cable, power adapter, SIM card removal tool |
|---|
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