Open your phone app
Go to the dial pad
Enter the code for caller ID blocking in your country
Dial the number you want to call
Press call
For many countries, use `*67` before the number
For some carriers or regions, use your phone settings to hide caller ID
On iPhone, go to Settings > Phone > Show My Caller ID > turn it off
On Android, go to Phone app settings > Calls > Additional settings > Caller ID > Hide number
Check with your carrier for the correct code if `*67` does not work