Is it suspicious he left his phone die?

boyfriend and I been together for three years. His phone messes up so when we are on the phone for hours it eventually dies obviously. But it takes forever to turn back on blah blah. Last night his phone died, it was late at 11 and it didn’t turn back on and it didn’t turn back on until this morning at 6 am. He wakes up early for work so his sleeping schedule is him going to bed at 10/11 at night. He didn’t work today so he texted me early saying it died and he knocked out. I texted his mom and she said he knocked out on the couch that she had to tell him to go to his bed. Any possibility that he deliberately turned it off and went out? He does have a work phone but that’s monitored so he only uses it for work. Am I going crazy or was this really suspicious?
Is it suspicious he left his phone die?
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