May I recommend the HTC 10? Just got mine about a month ago and I reallly love it.
But seriously, if you’ve got one of these explodophones – turn it off and take it back.
I’ve had a battery explode on me and it’s terrifying.
I had an AirCard for my laptop some years back – it plugged into the USB port on my laptop for internet access. I was sitting there one day, and I heard a hissing sound and I couldn’t figure out where it was coming from – I thought it was my soda can at first. Then the case popped open and went flying, and the battery itself went pinwheeling across the coffee table – WITH FLAMES SHOOTING OUT OF IT. It stopped before it hit the carpeting, and was still on fire when I upended a Coke on it.
Had I been anywhere else in the house when it happened, it would have been a full on disaster.
So, really, take the phone back.
Musings of a marginally sane feline-appreciating female. 
In 2010 I picked up an HTC Desire HD. I’ve changed the battery once, a year ago. It’s still going strong even though I’ve dropped it a couple of times. Obviously it doesn’t support the latest Nougat version (or anything past 3.1), but I’m happy with it.
Damn, 6 years is insane for a phone – well done. All my smartphones have been HTC’s – had a Hero, two HTC Ones and now the 10. Loved all of them. Plus, the lack of fire is nice.
Just opened the box to check the invoice. Faulty memory. I bought it in June 2011. Call me a ludite anyway.
Or a luddite. That’s allowed, too.
I was thinking of replacing it with the new Samsung. Glad I didn’t fall for that one. An Otterbox kept the HD in fine shape in a saddlebag when I was traveling – well, that, and a Zagg. I’m really surprised it’s lasted. The battery was swollen, possibly from overcharging – although I know they’re not supposed to do that with hardware/software. Since the new OEM battery I let it discharge to only 50 percent before hanging it on the charger.