Does everyone know about the OPPO upgrade?
Some OPPO phones can be upgraded, and upgrading can enhance the phone's firmware. You can dial *#1234# to check whether your OPPO phone is the latest version and if it needs an upgrade. If you don't understand, you can search on Baidu for OPPO PC Suite. I forgot to mention, PC Suite allows your computer to use your phone's SIM card to make calls, send texts, browse the internet, etc.
