I don't like my friends going on my phone and they think I don't trust them?

There's nothing wrong with being a personal person. My friends do that too, just remember to switch off your notifications, if you don't want people to know about anyone specifically you text, just change there contact name, send any personal photos to other devices at your home and delete them off of your phone and keep the puctures you dont mind showing off. Delete all personal messages and keep the messages you also dont mind showing off. If you have apps like facebook, delete the facebook app and just use the internet, it uses less of your data and you can keep your private messages more private.

Your phone is your own personal business and no one should go through it without your permission. Can you lock your phone? If so, do it.