how to make conference call in oppo a37

how to make conference call in oppo a37

 

How to Make a Conference Call Using Your OPPO Smartphone?
  1. Contact your carrier and enable the conference call feature.
  2. When you’re in a call, tap [Add Call] > Make another call.
  3. Once the second call is connected, tap on [Merge Calls].
  4. Repeat the same steps to add more calls to the conference.

 

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