Table of contents

Call Waiting Show or Hide Caller ID Flash for incoming calls Number restriction Vibrate when answered Call barring Call forwarding Roaming Assistant

Call Waiting

If a call is being made on the Oppo smartphone, we can use the "Call waiting" function to inform us when another call comes in.

Call waiting is already activated depending on the network operator, but in any case, call waiting can be activated or deactivated in the phone settings.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Phone -App
Step 2:  Open the  Menu
Step 3:  Tap on  Settings
Step 4:  Tap on  Carrier call Settings
Step 5:  Tap on  Additional settings
Step 6:  Choose  SIM-Card  you want
Step 7:  Enable or Disable  Call Waiting
  1. Open the Phone-App
  2. Open the Menu
  3. Tap on Settings
  4. Tap on Carrier call Settings
  5. Tap on Additional settings
  6. Choose SIM-Card you want
  7. Enable or Disable Call Waiting

Show or Hide Caller ID

On the Oppo smartphone, we can decide for outgoing calls whether our number should be displayed or suppressed. In the latter case, our number is not displayed to the caller, but "Unknown caller". We can display or suppress our caller ID under ColorOS in the phone settings.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Phone -App
Step 2:  Open the  Menu
Step 3:  Tap on  Settings
Step 4:  Tap on  Carrier call Settings
Step 5:  Tap on  Additional settings
Step 6:  Choose  SIM-Card  you want
Step 7:  Tap on  My Number
Step 8:  Choose between  Network Default,   Hide Number  and  Show Number
  1. Open the Phone-App
  2. Open the Menu
  3. Tap on Settings
  4. Tap on Carrier call Settings
  5. Tap on Additional settings
  6. Choose SIM-Card you want
  7. Tap on My Number
  8. Choose between Network Default, Hide Number and Show Number

Flash for incoming calls

If the Oppo smartphone's screen is off (idle) or locked, we can make the camera flash blink for incoming calls.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Phone -App
Step 2:  Open the  Menu
Step 3:  Tap on  Settings
Step 4:  Enable or Disable  Flash on Call
  1. Open the Phone-App
  2. Open the Menu
  3. Tap on Settings
  4. Enable or Disable Flash on Call

Number restriction

Number restriction allows you to block outgoing calls (except for emergency calls), while incoming calls are unrestricted. Number restriction (FDN) on the Oppo smartphone must be activated using PIN2. You can also create a list of phone numbers that are allowed for calling.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Phone -App
Step 2:  Open the  Menu
Step 3:  Tap on  Settings
Step 4:  Tap on  Carrier call Settings
Step 5:  Tap on  Fixed Dialing Numbers
Step 6:  Choose  SIM-Card  you want
Step 7:  Tap on  Enable FDN
Step 8:  Enter  PIN2  and confirm with  Save
  1. Open the Phone-App
  2. Open the Menu
  3. Tap on Settings
  4. Tap on Carrier call Settings
  5. Tap on Fixed Dialing Numbers
  6. Choose SIM-Card you want
  7. Tap on Enable FDN
  8. Enter PIN2 and confirm with Save

Vibrate when answered

When you answer or end a call, the Oppo smartphone vibrates by default, but you can deactivate the vibration in the phone settings.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Phone -App
Step 2:  Open the  Menu
Step 3:  Tap on  Settings
Step 4:  Enable or Disable  Vibrate When Call is Answered/Ended
  1. Open the Phone-App
  2. Open the Menu
  3. Tap on Settings
  4. Enable or Disable Vibrate When Call is Answered/Ended

Call barring

With call barring, incoming or outgoing calls can be specifically barred, including

  • All outgoing calls
  • Outgoing international calls
  • Outgoing international roaming calls
  • All incoming calls
  • Incoming calls while roaming
Android 10 (ColorOS 7.0)
Step 1:  Open the  Phone -App
Step 2:  Open the  Menu
Step 3:  Tap on  Settings
Step 4:  Tap on  Carrier call Settings
Step 5:  Tap on  Call Barring
Step 6:  Choose  SIM-Card  you want
Step 7:  Enable or Disable  Call Barring  you want
Step 8:  Enter the  Network Password
  1. Open the Phone-App
  2. Open the Menu
  3. Tap on Settings
  4. Tap on Carrier call Settings
  5. Tap on Call Barring
  6. Choose SIM-Card you want
  7. Enable or Disable Call Barring you want
  8. Enter the Network Password

Call forwarding

You can set up call forwarding on the Oppo smartphone, and the phone settings offer call forwarding, If busy, If unanswered, If not available and Always forward.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Phone -App
Step 2:  Open the  Menu
Step 3:  Tap on  Settings
Step 4:  Tap on  Carrier call Settings
Step 5:  Tap on  Call Fowarding
Step 6:  Choose  SIM-Card  you want
Step 7:  Choose between  Always Forward,   When Busy ,  When Unanswered  and  When Unreachable
Step 8:  Enter a  Phone numer  and tap on  On
  1. Open the Phone-App
  2. Open the Menu
  3. Tap on Settings
  4. Tap on Carrier call Settings
  5. Tap on Call Fowarding
  6. Choose SIM-Card you want
  7. Choose between Always Forward, When BusyWhen Unanswered and When Unreachable
  8. Enter a Phone numer and tap on On

Roaming Assistant

If we are not in our home country with the Oppo smartphone, the roaming assistant will automatically add the country code to a phone number.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Phone -App
Step 2:  Open the  Menu
Step 3:  Open the  Settings
Step 4:  Tap on  Roaming Assistant
Step 5:  Enable or Disable  Roaming Assistant
  1. Open the Phone-App
  2. Open the Menu
  3. Open the Settings
  4. Tap on Roaming Assistant
  5. Enable or Disable Roaming Assistant

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