Good processing and battery
But the camera quality sucks
And the ROM I’d not user friendly
So u can better to change stock ROM.
More bloat wares in the stock ROm
Otherwise the the product is well.4g, WiFi, data connection all running at the same time
Practically it is not possible and this is what you said. So first please tell us how they react with all of the above being run at the same time.
Individual frequencies you do not have any idea but are cmentong. First go and get the values and them say.
You have the number of lenovo and if not then we can help