Anong phone iyan? Anong internal storage niyan? Subukan mo i-clear ang cache ng apps. Iyong mga apps na di mo na ginagamit, i-uninstall mo. Kung ayaw i-uninstall, kahit i-disable na lang. Tapos ilipat lahat ng media files sa memory card. Iyon lang muna ayusin.
Go to your My Files > Internal Storage > Select the files you want to move such as SD Card. Depends to your capacity (i.e 16GB, 32GB, 64GB, 128GB, 256GB). Delete unused applications, Clear the apps' cache. Backup your data and Photos & videos to your computer. I suggest you to free up storage by deleting unused apps and unneccessary documents to your phone.