Is he cheating or am I crazy?

Hi, please be kind. My other half makes me feel like I'm going crazy. He takes his phone wherever he goes, puts it down face down when he's home and sleeps with it under his pillow. I've called him out on this before and he swears he's not doing anything. Recently I spoke to him about whether or not he'd changed his notification setting on his lock screen as they used to show and stay until he looked at them and now they flash once and 'hide' so to speak until you swipe up. I know before anyone says the main issue lies with me and I don't trust him but I'm trying to be better.

Another thing is- as I'm on android and him iphone I don't know if there are certain differences that just make me feel I'm going crazy for instance if I have a WhatsApp update it comes from settings, do you get WhatsApp updates through actual WhatsApp on iphone or are they simply hidden notifications. Please help a girl out. Photo attached for reference

Is he cheating or am I crazy?
Is he cheating or am I crazy?
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