How to set APN for cool and easy-to-recharge card of OPPO mobile phone?

Set the path of APN opening and closing:

1, ColorOS7 and above:

Opening method: go to settings > SIM card and traffic management >: select a SIM card > access point name > click+in the upper right corner to create a new APN.

Closing mode: enter "Settings >"; SIM card and traffic management >: Select a SIM card > Access point name > Find APN to be operated ",and click Delete (deleting APN may affect network usage, so choose carefully).

Reset APN: Go to Settings > SIM Card and Traffic Management >: Select SIM Card > Access Point Name > Click the ":"icon in the upper right corner and select Reset Access Point. Resetting the access point will delete all customized access points.