Did You Know the iPhone Has a Button for Ignoring Telemarketers?

Fastest Way to Decline a Call

Press the Sleep/Wake button on the side (iPhone 6 or 7)
or top (iPhone SE, plus the iPhone 5 and earlier).

Telemarketers are a scourge on society, but if you’re getting too many telemarketing calls, you can at least reduce how much time you spend on them. When a call comes in, you can always tap the red Decline button, but it’s even faster to press the Sleep/Wake button on the side (iPhone 6 or 7) or top (iPhone SE, plus the iPhone 5 and earlier). Pressing it once just silences the ringing on your end; press it twice to decline the call and send it directly to voicemail.