Have you encountered such a situation that you want to call someone but find their phone numbers have been changed without telling you? Or there are many contacts saved on your phone, but you rarely connect with them. In other situations, maybe your family members or friends like to frequently change their phone number. All these useless contacts take up too much memory space of your iPhone SE, so that its operating system runs very slowly which makes you feel boring. In this regard, you must want to delete iPhone SE contact which is no longer useful to you. However, you will find it troublesome to do this operation, since only one contact can be deleted at a time. You just have to give up unless you decide to remove them one by one. This is a complete waste of time and you are running out of patience, aren't you? That's the reason why more and more useless contacts saved on your iPhone SE. You must wonder whether there have some ways to remove single, multiple even all iPhone SE contacts or not. I'm so glad to tell you. Yes, there has! Next, I will show you three ways to accomplish this goal, you can choose the best one according to your requirements.