After the One M9, One E9 and One E9 +, the manufacturer is preparing to formalize a new model, called One E9st for the occasion, which should logically be more affordable than other versions “E9″ but also less efficient and equipped with less high-end components.  Unknown until now, the One E9st just appeared in the TENAA, the Chinese certification body. This latest certification allows us to glimpse the possibility of an announcement in the coming weeks or even a few days. It is difficult to say at this time if HTC will market its new smartphone in several countries or