The guy's secretary walked around one day filling out the little tags on all the extinguishers. California. Public building. City-run.
I wouldnt go newer then a 2000.
The problem with snooping through someone elses text messages, phone, emails, etc. is that you may find out about something about them you wish you will have never known. I dated this girl who left her diary where I could find it one day and read just one little portion of it and that changed forever how I felt about her. There were some family secrets she had dealt with and buried only in her diary about being sexually abused by her older brother when she was very young. I had no right to know that infomation unless she was willing to share it with me. Take it from me; sometimes you learn things you wish you had never learned. I would pretend like I never saw his phone if I were you. You need to keep your mouth shut. He may be keeping his mouth closed about somethings about you right now, but you just don't know it. That's what brothers do for each other. You protect them in secret if you have too without ever revealing the worse things you know about each other. It's called brotherly love. You should also pretend to know his password, then say it out loud so he will know he neds to change it. That will keep you from letting your curiosity get the best of you.