Downloaded instagram and got the annoying "your phone is low on space" message. Clicked the notification and noticed the "dialer storage" app takes up the most space on my phone. I cannot delete the data for this app so 18.35mb of data is just taking up space. Is there a way to free up this space? I tried deleting call lists and it made no difference. UPDATE:: Looks like text messages might be contributing. I deleted a few threads and it made a small difference in the space used.