Oppo Reno 10 Pro 5G User Manual page 85

Calls to Landline Phones/Cell Phones in
Country of Stay
Place calls the same way you would within Japan.
・Do not enter country code or omit first "0" from phone
numbers.
In Home Screen, (Phone)
Phone opens.
Tap dialpad to enter the other party's number
Call
Handset dials number. Call begins when the other party
answers.
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