If you are update your phone to marshmallow then you are facing problem about the storage in this we have seen that if we have to install memory card to internal memory.
And it is making many issued as the internal of the phone given by the company is 8 gb and the half it is used by installing softwares.
And apps given by the lenovo.so lenovo must improve about the storage expandeble and must improve on marshmallow function.As the phone also have many good function also like long live battery and good front and back camera and it is light in weight and the phone is slim to thnxs for reading.