Apple has added multiple features to their new phones to make it more convenient, fun and flashy. However, caller ID still remains a problem with the iPhone. Most users are unaware of the many apps that would greatly improve their experience with the phone. 
Know Identity Of Caller
Have you ever wanted to know the identity and location of a caller who is not in your phone book? There are several apps that you can use to get information about an unknown caller. These tools include TrueCaller and Callersmart, among others. All you will need to do is to use the iPhone caller ID app to search the true identity and the location of the caller. You can also use the same tools to block calls and messages from the people you do not want to communicate with.
Take A Screen Shot
If you ever want to capture an image of your phone screen at any time, then there is a trick for this. You will need to continually press your home key concurrently with your Sleep button. When you do this, you will hear a shutter similar to that produced when taking snaps. There are apps that will allow you to merge multiple screenshots together to make one long screenshot. Tailor is a good free option.