More than one of our Lumia 928 phones got hot today

[ninny1176]

Odd thing today, 3 of our Lumia phones got hot enough to shut off today. 3 separate phones/lines located in 2 states, on the same carrier all got hot this afternoon. These phones have worked flawlessly up until now, but I find it odd that this would occur on 3 at the same time....any other 928 uses experience this?

 

[fardream]

My Lumia 920 has experienced it several times, no idea why