Detailed comparison and review of HTC One A9S and Xiaomi Redmi S2. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | HTC One A9S | Xiaomi Redmi S2 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 146.49 mm | 160.73 mm | Xiaomi Redmi S2 has greater height than HTC One A9S. |
| Width | 71.5 mm | 77.26 mm | Xiaomi Redmi S2 has greater width than HTC One A9S. |
| Depth | 7.99 mm | 8.1 mm | HTC One A9S is narrower than HTC One A9S. |
| Weight | 150 g | 170 g | HTC One A9S is lighter than HTC One A9S. |
| Body Colour | - | Grey | Blue | Rose gold | Gold | Black | Dark grey | |
| Body Material | Metal | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | - | 1.577 W/kg (body), 0.429 W/kg (head) | |
| Connector Type | Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Single-SIM | Dual-SIM |
| DISPLAY | HTC One A9S | Xiaomi Redmi S2 |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | Super LCD | - | |
| Screen Size (Display Size) | 5" | 5.99" | Xiaomi Redmi S2 has larger screen size than HTC One A9S. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 1440 x 720 pixels | Xiaomi Redmi S2 has better screen resolution than HTC One A9S. |
| Display Format | HD | HD+ | |
| Pixel Density | 294 ppi | 269 ppi | HTC One A9S has better pixel density than Xiaomi Redmi S2. |
| Aspect Ratio | - | 18:9 | |
| Max Brightness | - | 450 cd/m² | |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | - | 1000:1 | |
| Display Features | - | Night Display, Sunlight Display, Reading mode, Colour temperature adjustment | |
| Display Protection (Screen Protector) | Corning Gorilla Glass (scratch resistant glass) | - |
| PROCESSOR | HTC One A9S | Xiaomi Redmi S2 |
|---|
| Processor Type (CPU) | MediaTek Helio P10 | Qualcomm Snapdragon 625 | |
|---|---|---|---|
| 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 506 |
| MEMORY | HTC One A9S | Xiaomi Redmi S2 |
|---|
| RAM | 2 GB | 3 GB | Xiaomi Redmi S2 has more RAM than HTC One A9S. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 32 GB | Xiaomi Redmi S2 has more internal memory than HTC One A9S. |
| User Memory | 10.2 GB | - | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 2 TB | microSDHC, microSDXC - up to 256 GB |
| CAMERA | HTC One A9S | Xiaomi Redmi S2 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 2 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 12 Megapixel | HTC One A9S has better camera resolution than Xiaomi Redmi S2. |
| Sensor Type | BSI | - | |
| Lens Type | Wide-angle lens | - | |
| Lens Aperture | F/2.2 | F/2.2 | Both phones have the same camera lens aperture. |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | HTC One A9S has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | 28.3 mm | - | |
| Self-Timer Delay | 0 - 10 sec | - | |
| Special Effects | - | HDR, low light enhancement | |
| Camera Modes | Panorama, Pro mode, HYPERLAPSE, RAW mode | Panorama, portrait mode, AI portrait mode | |
| Face Recognition (Face ID) | Face detection | Face recognition | Both phones have face detection. |
| Light Source | LED light | LED flash | |
| 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) | Sapphire crystal lens cover, HTC Zoe, Video Pic | Phase Detect Auto-Focus (PDAF), AI Dual camera |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 5 Megapixel |
|---|
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 16 Megapixel | Xiaomi Redmi S2 has better front camera resolution than HTC One A9S. |
| Sensor Type (Front) | BSI | - | |
| Lens Type (Front) | Wide-angle lens | Wide-angle lens | |
| Lens Aperture (Front) | F/2.8 | F/2.0 | Xiaomi Redmi S2 has better front lens aperture than HTC One A9S. |
| Focus Adjustment | Focus free | - | |
| Special Effects (Front) | Live make-up | Precise bokeh effect, AI Beautify 4.0 | |
| HDR Mode (Front) | - | Auto HDR mode | |
| Camera Modes (Front) | Auto selfie (smile selfie, still selfie) | Wide selfie mode | |
| Face Recognition (Face ID) | Face detection | - | HTC One A9S has face detection. |
| Light Source (Front) | - | LED flash | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) at 30 fps | - | |
| Camera Features (Front) | HTC UltraPixel Camera, Voice selfie, Self timer up to 10 seconds | - |
| BATTERY AND CHARGING | HTC One A9S | Xiaomi Redmi S2 |
|---|
| Battery Capacity (Battery Size) | 2300 mAh | 3080 mAh | Xiaomi Redmi S2 has larger battery capacity than HTC One A9S. |
|---|---|---|---|
| Standby Time | 432 hours | - | |
| Talk Time | 786.6 minutes | - | |
| Run Time Details | Talk (WCDMA): up to 786.6 min Standby (WCDMA): up to 432 hrs |
- | |
| Battery Technology | Lithium polymer | - |
| CELLULAR | HTC One A9S | Xiaomi Redmi S2 |
|---|
| 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 9 | |
| Navigation | GPS, GLONASS | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | HTC One A9S | Xiaomi Redmi S2 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, 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 7, Band 8, Band 20 | 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 2600, FDD 900, FDD 800 DD | 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 | Infrared (IrDA), IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 4.2 | |
| NFC | Yes | - | HTC One A9S has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | HTC One A9S | Xiaomi Redmi S2 |
|---|
| Supported Digital Audio Standards | WAV, MP3, OGG, MKA, M4A, 3GA, MP4, MID | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), DSD, AMR-WB, AMR-NB | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, AVI, MPEG-4, WMV, 3GP, TS, WebM, 3G2 | VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP | |
| Sound Enhancements | HTC BoomSound | - |
| FEATURES | HTC One A9S | Xiaomi Redmi S2 |
|---|
| 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, G-sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor | |
| Security Devices | Fingerprint reader | Face recognition, fingerprint reader | |
| Additional Phone Features | Wi-Fi Miracast, Dual microphones, HTC Connect, HTC Freestyle Layout | Infrared remote control, Dual microphones |
| OTHERS | HTC One A9S | Xiaomi Redmi S2 |
|---|
| Included Accessories | Power adapter | USB cable, power adapter, SIM card removal tool, clear soft case |
|---|
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