my phone won't store to my memory card I have a Sony Xperia M (C1905) and have a SanDisk ultra 16gb memory card but it won't save any of my apps pictures or videos or anything to it is there anyway to fix this?? It keeps telling me I have insufficient space because it's used my internal storage but still have 16gb on my memory card why???
Try this one - Open Settings > Storage > Transfer data > Check all. This moves all the content especially Photos, Music, Videos from internal memory to SD Memory card. 
Some video and audio formats may not support this operation. For moving those use ES File Explorer from Play store.