In depth comparison and review of HTC One (A9) and Microsoft Surface Duo 2. 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 One (A9) | Microsoft Surface Duo 2 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Folder - dual screen | |
| Height | 145.75 mm | 145.2 mm | HTC One (A9) has greater height than Microsoft Surface Duo 2. |
| Width | 70.8 mm | 92.1 mm | Microsoft Surface Duo 2 has greater width than HTC One (A9). |
| Depth | 7.26 mm | 11 mm | HTC One (A9) is narrower than HTC One (A9). |
| Weight | 143 g | 284 g | HTC One (A9) is lighter than HTC One (A9). |
| Dimensions Details | - | Unfolded - 184.5 mm x 5.5 mm x 145.2 mm | |
| Body Colour | Topaz gold | Opal silver | Carbon grey | Glacier | Obsidian | |
| Body Material | - | Corning Gorilla Glass | |
| Waterproof (Water-resistant) | - | - | |
| Repairability Index | - | 3.9 (out of 10) | |
| SAR Value | 0.41 W/kg | 0.726 W/kg (head), 1.478 W/kg (body) | |
| Integrated Components | FM radio | - | |
| Connector Type | Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
USB Type-C - 24 pin USB-C | |
| SIM Card Type (Size) | Nano SIM | Nano SIM, Electronic SIM card (e-SIM) | |
| SIM Card Qty | - | Dual-SIM |
| DISPLAY | HTC One (A9) | Microsoft Surface Duo 2 |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | AMOLED | AMOLED | |
| Foldable Display | - | Yes | |
| Display Design | - | Both directions folding | |
| Screen Size (Display Size) | 5" | 5.8" | Microsoft Surface Duo 2 has larger screen size than HTC One (A9). |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 1344 x 1892 pixels | Microsoft Surface Duo 2 has better screen resolution than HTC One (A9). |
| Display Format | Full HD | - | |
| Pixel Density | 440 ppi | 401 ppi | HTC One (A9) has better pixel density than Microsoft Surface Duo 2. |
| Aspect Ratio | - | 13:9 | |
| Max Brightness | - | 800 cd/m² | |
| HDR | - | Yes | Microsoft Surface Duo 2 has HDR. |
| Display Refresh Rate | - | 90 Hz | |
| Display Features | - | DCI-P3 Wide colour gamut, 100% sRGB, Dual PixelSense Fusion Displays | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 4 (scratch resistant glass) | Corning Gorilla Glass Victus (scratch resistant glass) |
| SECOND DISPLAY |
|---|
| Second Display Type | - | OLED display - colour | |
|---|---|---|---|
| Second Display Screen Size | - | 5.8" | |
| Second Display Resolution | - | 1344 x 1892 pixels |
| UNFOLDED DISPLAY |
|---|
| Unfolded Display Screen Size | - | 8.3 in | |
|---|---|---|---|
| Unfolded Display Resolution | - | 2688 x 1892 pixels |
| PROCESSOR | HTC One (A9) | Microsoft Surface Duo 2 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 617 | Qualcomm Snapdragon 888 5G | |
|---|---|---|---|
| Clock Speed | 1.5 GHz | - | |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | HTC One (A9) has 64-bit architecture. |
| MEMORY | HTC One (A9) | Microsoft Surface Duo 2 |
|---|
| RAM | 2 GB | LPDDR5 SDRAM - 8 GB | Microsoft Surface Duo 2 has more RAM than HTC One (A9). |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 128 GB | Microsoft Surface Duo 2 has more internal memory than HTC One (A9). |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 2 TB | - |
| CAMERA | HTC One (A9) | Microsoft Surface Duo 2 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 3 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 12 Megapixel | HTC One (A9) has better camera resolution than Microsoft Surface Duo 2. |
| Sensor Type | BSI-CMOS | - | |
| Lens Aperture | F/2.0 | F/1.7 | Microsoft Surface Duo 2 has better lens aperture than HTC One (A9). |
| Pixel Size | - | 1.4 μm | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | Both phones have optical image stabilization. |
| Focus Adjustment | Automatic | - | |
| Digital Zoom | - | 10x | |
| Special Effects | - | HDR | |
| Camera Modes | Pro mode | Night mode, Auto mode, low-light shots, Panorama mode with wide dynamic range, slow motion video at 120 or 240fps | |
| Light Source | LED light | Dual LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps | |
| Camera Features (Functions) | Sapphire crystal lens cover | Dual Pixel Phase Detect Auto-Focus (PDAF), Smooth Zoom, HEVC (High Efficiency Video coding), HDR video recording, multi-frame photo capture, dynamic range scene detection |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 12 Megapixel | |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Telephoto lens | |
| Lens Aperture (2nd Camera) | - | F/2.4 | |
| Pixel Size (2nd Camera) | - | 1 μm | |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Microsoft Surface Duo 2 has optical stabilisation of the second camera. |
| Optical Zoom | - | 2x | |
| Camera Features (2nd Camera) | - | Phase Detect Auto-Focus (PDAF) |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 16 Megapixel | |
|---|---|---|---|
| Lens Type (3rd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (3rd Camera) | - | F/2.2 | |
| Field of View (3rd Camera) | - | 110 degree(s) | |
| Pixel Size (3rd Camera) | - | 1 μm | |
| Camera Features (3rd Camera) | - | Field of view, distortion correction |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 4 Megapixel | 12 Megapixel | Microsoft Surface Duo 2 has better front camera resolution than HTC One (A9). |
| Lens Aperture (Front) | F/2.0 | F/2.0 | Both phones have the same front camera lens aperture. |
| Pixel Size (Front) | - | 1 μm | |
| Focus Adjustment | Focus free | - | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) | - | |
| Camera Features (Front) | HTC UltraPixel Camera | - |
| BATTERY AND CHARGING | HTC One (A9) | Microsoft Surface Duo 2 |
|---|
| Battery Capacity (Battery Size) | 2150 mAh | 4449 mAh | Microsoft Surface Duo 2 has larger battery capacity than HTC One (A9). |
|---|---|---|---|
| Standby Time | 432 hours | - | |
| Talk Time | 960 minutes | 1680 minutes | Microsoft Surface Duo 2 has longer battery life when making calls than HTC One (A9). |
| Run Time Details | Talk (WCDMA): up to 960 min Standby (WCDMA): up to 432 hrs Active online usage (Wi-Fi): up to 9 hrs Playback (audio): up to 60 hrs Playback (video): up to 12 hrs |
Talk: up to 1680 min Playback (local video): up to 15.5 hrs |
|
| Battery Technology | Lithium polymer | - |
| CELLULAR | HTC One (A9) | Microsoft Surface Duo 2 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Microsoft Surface Duo 2 has more advanced generation mobile network. |
| Operating System | Android 6.0 (Marshmallow) | Android 11 | |
| User Interface | HTC Sense | - | |
| Intelligent Assistant | - | Google Assistant | |
| Navigation | GPS, GLONASS | GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | HTC One (A9) | Microsoft Surface Duo 2 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, FDD-LTE, TDD-LTE, Gigabit LTE, LAA, 5G NR FR1 | |
|---|---|---|---|
| 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 41 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 14, Band 19, Band 20, Band 25, Band 26, Band 28, Band 29, Band 30, Band 38, Band 39, Band 40, Band 41, Band 42, Band 46, Band 48, Band 66, Band 71 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700 PS, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 700d, FDD 2300 WCS, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 3500, TDD 5150, TDD 3600, FDD 1700 - 2110 AWS-3, FDD 600 | |
| 5G NR Band | - | N1, n2, n3, n5, n7, n20, n28, n38, n41, n66, n71, n77, n78, n79, n25 | |
| 5G NR Frequency | - | FDD 2100, FDD 1900PCS, FDD 1800, FDD 850, FDD 2600, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, FDD 600, TDD TD 3700, TDD TD 3500, TDD TD 4500, FDD 1900 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11ax | |
| Bluetooth | Bluetooth 4.1 | Bluetooth 5.1 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | HTC One (A9) | Microsoft Surface Duo 2 |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, AC-3, OGG, MIDI, M4A, EC3 | WAV, AAC, AMR, MP3, FLAC, OGG, MIDI, M4A, apt-X, IMY, RTX, OTA, MID, TWS, RTTL | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, AVI, MPEG-4, WMV, 3GP, 3G2 | MKV, FLV, AVI, MOV, MPEG-4, WMV, ASF, 3GP, H.264, TS, M2TS, WebM, HEVC, 3G2, HEIF, H.265 HEVC, HEIC | |
| Sound Enhancements | Dolby sound technology | Qualcomm aptX HD audio, Qualcomm aptX Classic |
| FEATURES | HTC One (A9) | Microsoft Surface Duo 2 |
|---|
| 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 | Hall sensor, Time of Flight (ToF), dual accelerometers, dual gyroscope, dual magnetometer, dual ambient light sensor, dual proximity sensor | |
| Security Devices | Fingerprint reader | Fingerprint reader (side) | |
| Additional Phone Features | DLNA Certified, HTC BlinkFeed, Hi-Res Audio, Android Sensor Hub | MIMO technology, Fast Charging, dual battery, Full Duplex communication, dual microphones with AI-based noise suppression and acoustic echo cancellation |
| OTHERS | HTC One (A9) | Microsoft Surface Duo 2 |
|---|
| Included Accessories | Power adapter | SIM card removal tool, USB-C headset, Surface Duo 2 USB-C cable | |
|---|---|---|---|
| Compliant Standards | - | HEARING AID M4/T3 |
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