Dual sim : Yes. OS: Android 10.0. Antenna : "inner FPC antenna. SIM card slot: Dual sim. Project platform：. Mic: "Silicon paste plate. MTK6580m/Andriod： 10.0/ WCDMA：B1/B2/B4/B5/B8/GSM： 850/900/1800/1900/dual card/4.0 "Incell perforated screen 452 960 /Type-C USB/ Battery 2000mAh/ Bluetooth, WIFI, Vibration .
eBay