Sony Xperia L device memory is being eaten up My phone's /data storage is getting fuller all by itself even though I have not installed much apps. By doing some search on net have found that there are folders under Data folder such as tombstones, thumbnails etc. which are taking up the space but which are not accessible without rooting. I want to clear up this space without rooting the device.

My device is a Sony Xperia L running Android 4.1.3 Jelly Bean)
It needn't necessarily be tombstones and thumbnails that takes up your phone's data storage.

Normal app usage (mostly browser cache, etc.) also consumes space over time.

Have a look at

Settings-&gt;App-&gt;All apps


then via menu let them Sort by size to see the biggest storage consumers.

E.g. my phone's biggest consumer is Chrome (123MB data, 280MB cache):

.