Type USSD codes on your iPhone to access hidden cellular features quickly. Here, we'll list some of the most useful ones.

After years of waiting ... full functionality on the iPhone, too. Apple's privacy limitations have so far stopped third-party app developers from creating a true call screening tool.

Facebook-owned WhatsApp has rolled out the much-awaited ‘call waiting’ feature in its Android app. Apple iPhone users already had access to this feature as WhatsApp for iOS had been upgraded ...

It works fairly well if you’re willing to pay for it, but now there’s a new iPhone app that takes a new approach to spam call blocking. And best of all, it’s currently on sale for free.