Both my wife and I have the EVO 4g LTE, and lately both our phones, just go crazy occasionally!
Phones get very hot for no apparent reason,
Go through the battery very fast, (I've had my battery completly drain in 3 hours, with hardly any phone use at all)
Yesterday was the worst we have seen it, especially for my wife's phone, she could not even get her phone to stay on for more than a couple minutes. Today, our phones seem to be just fine,, so far, Overall, we have liked the phones, but this is happening more and more lately. It's looking like our next phone will be Windows phones,, and since Sprint has none, looks like a carrier change is in order also...