Hi, there I am using Iphone7. I have been using my phone number for a long time. So, I am thinking to change new phone number and use same my phone. How can I do it? If I changed new phone number, Can I still keep all my friend’s contact number details, all the photos what I have information in my phone? Is there any way I can keep them all? Or it will be deleted all my information from the phone? I really don’t know about those things so, I am asking.. Hope you understand what I mean. Thank you.