Use the built-in call recording feature if it is available in your region and carrier
Check local laws before recording any call
Ask the other person for consent before recording
Use speakerphone with a separate recording device or app if permitted
Use a conference call service that supports recording and notification
Use voicemail-based recording options if your carrier provides them
Use external hardware such as a recorder connected through the audio output
Avoid trying to bypass system announcements or consent prompts
Save the recording securely and label it clearly
Delete recordings you do not have permission to keep