How to know Mxkey not activeate and activate and the remaind of it's credit

[Liheng]

so far I have used it but I don't interest on credit or what

because I have never met any phone that damage Imei

but Now I want to understand about that

I have both mxkey not yet activate and activated

so how can I know that

and how can I check how many credit remain after we use it some

for example this picture



thank in advance to manole and all friend here