In addition to data warning, the OnePlus smartphone has a feature that automatically disconnects all data connections after a set data limit is exceeded.

A data connection via a WiFi network is still possible.

Android 10 | OxygenOS 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  Wi-Fi & network
Step 3:  Tap on  Data usage
Step 4:  Tap on  Billing cycle
Step 5:  Enable or disable  Auto-disconnect from network
Step 6:  Confirm with  OK
  1. Open the Settings
  2. Tap on Wi-Fi & network
  3. Tap on Data usage
  4. Tap on Billing cycle
  5. Enable or disable Auto-disconnect from network
  6. Confirm with OK

OnePlus Instructions
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