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Oppo A30 vs Xiaomi Redmi 12

2G Network SIM1: GSM 900 / 1800 / 1900 SIM2: GSM 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100  
4G Network LTE LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)  
Dimensions 140 x 69 x 6.9 mm 168.6 x 76.3 x 8.2 mm  
Sim Type Hybrid Dual SIM, Dual Standby, (Nano-SIM)  
Weight 138g 198 g  
Display Type IPS LCD capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 550 nits (peak)  
Display Size 5.0 inches, 1080 x 1920 pixels 6.79 Inches   1080 x 2460 Pixels (~396 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass  
Memory 16GB built-in 128GB Built-in, 8GB RAM  
Card slot MicroSD card microSDXC (uses shared SIM slot)  
RAM 3GB RAM
GPRS Yes Yes
EDGE Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct  
BlueTooth Bluetooth v4.0 v5.0 with A2DP, LE  
USB USB (microUSB v2.0, USB Host) USB Type-C 2.0, USB On-The-Go  
NFC No  
GPS Yes Yes + A-GPS support & Glonass, BDS  
Main Camera 13 MP, f/2.2, phase detection Autofocus, Geo-tagging, LED flash, touch focus, face detection, HDR, panorama, Triple Camera: 50 MP, f/1.8, (wide), PDAF + 8 MP, f/2.2, (ultrawide) + 2 MP, f/2.4, (depth), LED Flash   Phase detection, geo-tagging, touch focus, face detection, HDR, panorama, Video (1080p@30fps)  
Front Camera 8 MP 8 MP, f/2.1, (wide), Video (1080p@30fps)  
OS Android OS, v5.1 (Lollipop) Android 13 OS  
Chipset Mediatek Helio G88 (12nm)  
Processor 2.3 GHz Quad-core, Qualcomm Snapdragon 801 Octa-core (2x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU Mali-G52 MC2  
Sensors Accelerometer, proximity, compass Accelerometer, Compass, Fingerprint (side-mounted)  
Browser HTML5 HTML5  
Sound FM radio (Not yet confirmed), 3.5mm audio jack, MP4/H.264/FLAC player, MP3/eAAC+/WAV player, Google Talk, Games (built-in + downloadable) 3.5mm Audio Jack, Speaker Phone  
Colors Black, White Midnight Black, Sky Blue, Polar Silver  
Battery 2525 mAh (Li-Po Non removable), 5000 mAh   - Fast charging 18W wired, PD  
Misc GPS + A-GPS support, Dual SIM + Nano-SIM/ Micro-SIM, dual stand-by), Document viewer, Photo/video editor, Google Search, Maps, Gmail, Youtube, Calendar, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Glass front, plastic frame, glass back, IP53, dust and splash resistant, NFC (market dependent), Photo/video editor, Document viewer