So I got my UPS tracking this morning. There is an option for pre-sign for delivery. I live in an apartment complex. Normally, if UPS knocks and I'm not home they deliver packages to the apartment office. If I presign will they just leave it at my door? Also, I'm going to try to have a friend hang at my house after I go to work if the phone isn't in my hands by that time. They can sign for the package if they're in my house, correct?