What's the problem (what you describe is a possible solution, to what problem?). Is your internal memory already running out? Have you checked what is eating up your memory? For instance: on my Redmi, i wanted to have lots of music. This ate up internal memory. My music app, Google Music, has a setting, in which i can specify music needs to be stored on SD. As soon as i did that, i had enough internal memory and no more problem.