He touched/held my hand for a few seconds?

Is that flirting or could it have been really accidental? He was showing me something on his phone and put the phone in my hand in such a way that our hands were touching and we had it like that for a few seconds (3-4 seconds) before he pulled it away and just leaned closer to watch and let me hold the phone.

Was that necessary touching or did he want to touch me?

Other than that he doesn't really flirt much except maintain eye contact and smile (some teasing sometimes). But he doesn't pay me much attention and he's really confident so if he was interested I figured he would make it more obvious...

So is touching a persons hand for that long flirting?
He touched/held my hand for a few seconds?
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