I wasn't calling you immature. No snide remarks at all.
I put my phone in my bag all the time. Among other places, the gym (at my building). It's a calculated risk. I am, generally speaking, within eyesight and 50 feet of it at all times.
But all of this doesn't matter. I repeat, the OP wasn;t asking for parenting advice. He was asking about what some steps might be to get the phone back. Almost nobody provided him that.
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I think that is why he asked, no? He wasn't sure if there were any options that he didn't yet exhaust. So he asked on an Apple forum, where people might know. Instead people took this a completely different direction. I maintain that his mistake was mentioning the circumstances. He gave us but a dot of information ont he timeline that is his life and folks are analyzing the type of parent he is. It's simply ridiculous.
Thank you for being a straight up guy and saying it like it is
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Don't beat your self up over this. trying to be a good father to your child is priceless, and my prayers goes out to you and your daughter. I am praying that there will be a happy ending to this unfortunate ordeal. Keep your head up and keep up the good work on being the best father you can be to your child. We need more fathers like you. There are so many children that are without fathers these days. And I will say again being the best father you can be for your child is priceless, good luck to you and your daughter cheers.
Thank you so much for the kind words
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OP, I truly hope it turns up.
In 1999 I had my car broken into at my friends house (he lived in the outskirts of the suburbs bordering the country too) and 400 CDs, my CD changer, radar detector, and amp/subwoofer stolen. None of it was in plain sight. I got everything but the CD changer back a month later because crooks are frack'n dumb and I filed a police report. Not saying you'll get it back, but you never know, and I hope you do.
All that being said, is there a reason why Find My iPhone enabled? I'd do it just so I knew where my kid (and their phone) were at that age for piece of mind, not because I wouldn't trust my kid, but because there are too many F'd up people in this world who F with kids. I read through 85% of this thread and didn't see anyone ask that or any answer to that. Sorry if I missed it.
This situation is precisely why Apple builds Find My iPhone into every iOS device and gives it to you for free. It's been one of the most touted features of iOS/iDevices for several years. The moral here is enable it. Every device. Every time.
Good luck
Honestly, I've had iPhones and iPads for years and have never been through something like this so I didn't think it was such a big deal. Man did I learn the hard way. From now on, they will ALL have it enabled. You live and learn!.