OPPO K9 5G, Used – 256GB/8GB RAM – 5G, 6.43″ 90Hz AMOLED Display

Design & Build

• 6.43-inch FHD+ (2400 x 1080) Samsung AMOLED display with 90Hz refresh rate and 180Hz touch sampling rate, 410 ppi, up to 750 nits peak brightness – 91.7% screen-to-body ratio, 20:9 aspect ratio 
• Qualcomm Snapdragon 768G octa-core processor (7nm) – 1×2.8GHz Kryo 475 Prime & 1×2.2GHz Kryo 475 Gold & 6×1.8GHz Kryo 475 Silver, Adreno 620 GPU – 5G-integrated chipset with 45万+ AnTuTu score 
• 8GB LPDDR4x RAM with 256GB UFS 2.1 storage – also available in 128GB variant – no microSD card slot 
• Triple 64MP rear camera: 64MP main (f/1.7, PDAF) + 8MP ultra-wide (119° FoV) + 2MP macro (f/2.4) – 4K@30fps, 1080P@120fps slow-mo, Super Video Stabilization 3.0, Moonlight Night Scene Algorithm 
• 32MP front camera (f/2.4) – AI beautification, AI portrait retouching 
• 4300mAh battery – 65W SuperVOOC 2.0 fast charging (0-100% in 35 min, 15 min to 60%) 
• In-display optical fingerprint sensor (6th gen), Face Unlock, 3.5mm headphone jack, NFC, USB-C, Wi-Fi 802.11ac, Bluetooth 5.1, 360° Surround Antenna Design 2.0 
• 5G connectivity – Dual SIM (Nano-SIM + Nano-SIM) – 5G SA/NSA support, 5G bands n1/n41/n77/n78 
• ColorOS 11.1 based on Android 11 – upgradable to Android 13 (ColorOS 13) via public beta 
• 3D VC liquid cooling system, GPA-A technology for power balancing 
• 3D curved glass front and back with aluminum frame – 159.1 x 73.4 x 7.9mm, 172g 
• Available in Black and Gradient – Black variant features large “K” design with racing/cyber elements 

Key Highlights & Considerations:

• 65W SuperVOOC 2.0 fast charging – 0-100% in 35 minutes, 15 minutes to 60%; “charge for 5 minutes, game for 2 hours” – one of the fastest charging speeds in its class 
• 90Hz AMOLED display – Smooth 90Hz refresh rate with 180Hz touch sampling; Samsung AMOLED panel with 410 ppi and up to 750 nits peak brightness 
• Lightweight 5G design – At just 7.9mm thick and 172g, one of the lightest 5G phones of its era; comfortable for extended use 
• Versatile 64MP triple camera system – 64MP main with f/1.7 aperture, 119° ultra-wide, macro lens; Moonlight Night Scene Algorithm for improved low-light video; 32MP front camera 
• Gaming-focused features – 3D VC liquid cooling, Hyper Boost gaming engine, Game Mode, Lightning Start, Game Voice Changer, 360° Surround Antenna