Some iPhone users don't realize the ability to make multi-party phone calls is built right into the iPhone software. To initiate a conference call check out the following steps:
Call Waiting allows you to never miss a phone call even when you're on another call. For most this is a welcomed feature on their iPhone, but for others it can become disruptive for a variety or reasons. Here's how you can disable and enable Call Waiting on your iOS device:
Blocking calls on the iPhone can increase privacy, reduce spam and offer peace and quiet when it's most needed. The iPhone has several features designed to help block undesired calls. One way to reduce annoyances is with the Do Not Disturb feature. Blocking an individual number can be convenient, but sometimes it's not enough. There's an easy way to block all calls that are not listed in your iPhone Contacts.
Recents is a jailbreak tweak that places recent call information directly into the Notification Center. Normally iPhone owners must pull up the Phone app and tap Recents to see recent and missed calls. Recent FaceTime calls can also be viewed separately in the FaceTime app. Recents seeks to make viewing recent call information simpler and more convenient.