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Samsung Galaxy J1 vs Oppo Reno 15

2G Network SIM1: GSM 850 / 900 / 1800 / 1900 SIM2: GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 2100 HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Network LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800) 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  
Dimensions 129 x 68.2 x 8.9 mm 158 x 74.8 x 7.77mm (Twilight Blue), 7.89mm (Aurora White)  
Sim Type Nano-SIM + Nano-SIM + eSIM (max 2 at a time)  
Weight 122 g 197 g  
Display Type TFT capacitive touchscreen, 16M colors AMOLED Capacitive Touchscreen, 1B Colors   120Hz, HDR10+, 600 nits (typ), 1200 nits (HBM)  
Display Size 4.3 inches, 480 x 800 pixels (~217 ppi pixel density) 6.59 Inches   1256 x 2760 Pixels (~460 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 7i  
Memory 4GB built-in 256GB Built-in, 12GB RAM, UFS 3.1  
Card slot microSD card (supports up to 128GB) No  
RAM 768MB RAM
GPRS Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth Bluetooth v4.0 with A2DP v5.4 with A2DP, LE, aptX HD, LHDC 5  
USB USB USB Type-C 2.0, OTG  
NFC Yes  
GPS Yes Yes + GPS, GLONASS, GALILEO, BDS, QZSS  
Main Camera 5 MP, 2592 x 1944 pixels, autofocus, LED flash, Geo-tagging, touch focus, face detection, Video (720p@30fps), 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 2 MP 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.x (KitKat) Android 16 OS  
Chipset Qualcomm SM7750-AB Snapdragon 7 Gen 4 (4 nm)  
Processor 1.2 GHz Quad-Core Cortex-A7 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 722  
Sensors Accelerometer, proximity Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity, BeaconLink calls via bluetooth, up to 200m  
Browser HTML HTML5  
Sound FM radio with RDS recording, 3.5mm audio jack, MP4/H.264 player, MP3/WAV/eAAC+ player, YouTube, Google Talk, Games (built-in + downloadable) Speaker Phone  
Colors White, Black, Blue Twilight Blue, Aurora White  
Battery Music-play up to 40 hrs 1850 mAh 6500 mAh   - Fast battery 80W wired, 80W UFCS, 55W PPS, 13.5W PD, 13.5W QC, 100% in 50 min, Reverse wired  
TalkTime Talk-time up to 10 hrs
Misc GPS + A-GPS support & GLONASS, Optional Dual SIM + Micro-SIM, dual stand-by), Document viewer, Google Search, Maps, Gmail, YouTube, Calendar, Speakerphone 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)