<human>: Can you condense the text into a few key points?

Bf and I have been doing long distance for 3 months now and we always call each other before we go to sleep, even if we've talked to each other earlier in the day.  For the first time, we did not talk before going to sleep. I was worried about his safety as he was doing a road trip alone, and wasn't sure if he made it back to his hotel safely. I tried calling a couple times over an hour and a half. Each time, his phone rang and went to voicemail. I did not hear from him all night.

He called me this morning to say that he was sorry that he missed my calls, but his phone was dead and he didn't charge it until this morning. This is weird because in my experience, if a cell phone is dead the call will go straight to voicemail. It will not ring and then go to voicemail.

I wonder if he might be lying about the phone being dead because it rang and went to vm. This was an iPhone 5. Could someone more tech savvy point me in the right direction? Is this possible with an iPhone? I have already made a brief post on r/
<bot>: wondering if bf lied about phone being dead. Can iPhone calls ring and go to voicemail when dead? Or do they go straight to voicemail?