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How to screen calls on an iPhone
Keep spam away from your iPhone.
iPhones offer a Live Voicemail feature that transcribes the audio onscreen in real time, so you can pick up the call if it’s important. One I’ve tested out is Truecaller, which checks incoming calls against its database of millions of bad actors so you can make an informed decision about whether to pick up. With this app, you get the call identification for free, but paying for a premium plan, for $6.99 a month, lets you automatically block suspicious numbers as they come in.
Or read this on The Verge