The make most likely isn't 4GLTE, that's the capability of the phone. (If that's the make, you're out of luck - I doubt that anyone but the manufacturer has ever heard of it.) MTK6571 is the "system on chip" - the SoC used by the phone (CPU, RAM, ROM, etc.) - many manufacturers use it. Version 5.1 is the version of Android.
If the phone is made solely for the Chinese market, there probably is no way of putting English in it. If it's just the Chinese version of a common phone (Samsung, LG, etc.) there might be.
(Please
join Android Central so you can continue the conversation here, instead of starting a new thread for each answer.)