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HTC One (M8) vs Oppo Reno 15

2G Network GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 - EMEA, Asia HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Network LTE 700 / 900 / 1800 / 2100 / 2600 - Asia LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 20(800), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)  
5G Network SA/NSA  
Available Yes
Dimensions 146.4 x 70.6 x 9.4 mm (5.76 x 2.78 x 0.37 in) 158 x 74.8 x 7.77mm (Twilight Blue), 7.89mm (Aurora White)  
Sim Type Nano-SIM Nano-SIM + Nano-SIM + eSIM (max 2 at a time)  
Weight 160 g (5.64 oz) 197 g  
Display Type Super LCD3 capacitive touchscreen, 16M colors AMOLED Capacitive Touchscreen, 1B Colors   120Hz, HDR10+, 600 nits (typ), 1200 nits (HBM)  
Display Size 1080 x 1920 pixels, 5.0 inches (~441 ppi pixel density) 6.59 Inches   1256 x 2760 Pixels (~460 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 3 Corning Gorilla Glass 7i  
Memory 16/32 GB 256GB Built-in, 12GB RAM, UFS 3.1  
Card slot up to 128 GB No  
RAM 2 GB RAM
GPRS Yes
EDGE Yes
3G HSDPA, 42 Mbps (21 Mbps - AT&T), HSUPA, 5.76 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL
WLAN Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, DLNA, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band  
Infrared No
BlueTooth Yes, v4.0 with A2DP v5.4 with A2DP, LE, aptX HD, LHDC 5  
USB Yes, microUSB v2.0 (MHL), USB On-the-go, USB Host USB Type-C 2.0, OTG  
NFC Yes (market/operator dependent) Yes  
GPS Yes, with A-GPS support and GLONASS Yes + GPS, GLONASS, GALILEO, BDS, QZSS  
Main Camera Dual 4 MP, 2688?1520 pixels, autofocus, dual-LED (dual tone) flash Triple Camera: 50 MP, f/1.8, 26mm (wide), PDAF, OIS + 50 MP, f/2.8, 80mm (telephoto), PDAF, OIS, 3.5x optical zoom + 8 MP, f/2.2, 15mm, (ultrawide), 1/4.0", AF, LED Flash   Color spectrum sensor, HDR, panorama, Video (4K@30/60fps, 1080p@30/60/120fps, gyro-EIS, HDR)  
Front Camera 2µm pixel size, automatic 50 MP, f/2.0, 18mm (ultrawide), AF, Panorama, HDR, Video (4K@30/60fps, 1080p@30/60fps, gyro-EIS, HDR)  
OS Android OS, v4.4.2 (KitKat) Android 16 OS  
Chipset Qualcomm MSM8974AB Snapdragon 801 Qualcomm SM7750-AB Snapdragon 7 Gen 4 (4 nm)  
Processor Quad-core 2.3 GHz (US/EMEA)/ 2.5 GHz (Asia, China) Krait 400 Octa-core (1 x 2.8 GHz Cortex-720 + 4 x 2.4 GHz Cortex-720 + 3 x 1.8 GHz Cortex-520)  
GPU Adreno 330 Adreno 722  
Sensors Accelerometer, gyro, proximity, compass, barometer Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity, BeaconLink calls via bluetooth, up to 200m  
Browser HTML5 HTML5  
Radio FM Radio with RDS
Sound Speaker Phone  
Colors Gunmetal Gray, Glacial Silver, Amber Gold Twilight Blue, Aurora White  
Battery Non-removable Li-Po 2600 mAh battery 6500 mAh   - Fast battery 80W wired, 80W UFCS, 55W PPS, 13.5W PD, 13.5W QC, 100% in 50 min, Reverse wired  
StandBy Time Up to 271 h (2G) / Up to 496 h (3G
TalkTime Up to 14 h (2G) / Up to 20 h (3G)
Misc - SNS integration - Google Drive (50 GB cloud storage) - Active noise cancellation with dedicated mic - TV-out (via MHL A/V link) - DivX/XviD/MP4/H.263/H.264/WMV player - MP3/eAAC+/WMA/WAV/FLAC player - Google Search, Maps, Gmail, YouTube, Calendar, Google Talk - Organizer - Document viewer/editor - Photo viewer/editor - Voice memo/dial/commands - Predictive text input SMS(threaded view), MMS, Email, Push Mail, IM   NFC (market/region dependent), Glass front + Gorilla Glass 7i), aluminum frame, glass back, IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)