I have been using this Oppo F21 Pro 5G phone for 2 years. There are no issues, only the display has been changed to an IPS display. It comes with the original charger and box. If you are in Dhaka, I can bring it to you. I will provide whatever security you need. The battery backup lasts all day with continuous use. If you want to buy it, come and see it. Price is fixed.