JessiM, I am very curious to see if your seller will replace your device under warranty because of such issue (overheating). I am almost 100% sure all BV8000 devices are performing just like mine (and yours). It is just e personal opinion of whether a person thinks his device is overheating or not. Some people are just making like 1-2 phone calls per day and noting more and will never feel the overheating. If you are playing games and using apps long time during the day you should see something is very wrong with this phone. It has the most horrible CPU management I have ever seen. In fact when the CPU has a low load (like sitting on the lock screen) its powerful cores (4,5,6,7) are at max speed (2.4GHz). When there is a load (like a 3D game) the CPU cores clock drops to 800MHz or 1200MHz and the games are lagging. It is quite clear the people who write the firmware have no idea what they are doing. Just look how many version of the FW were removed because of critical bugs like not able to charge. Not to mention that this phone has a tons of other issue...
JessiM, my suggestion is to use this phone are much as you can and then switch to another brand.
1) About the phone not sleeping while in low load, please refert to this thread:viewtopic.php?f=191&t=369542
If your device doesn't sleep correclty while in no load, please downgrade to 20171219, 20171227 or 20180124 firmwares.
2) Overheating is not normal, even more so if having a low load. No, all the BV8000s are behaving normally. Only few have such issue! and should be replaced under warranty.
I use my BV8000Pro everyday. I know about what i'm taking about...