why can't i move certain apps from sd card to internal memory on android LG-L38c touchscreen phone? Why are some apps i download and install saving to sd card instead of internal memory? I have more space on internal than sd card and it won't let me move some apps to internal memory.
In the Manifest of the .apk file, developers can specify where they prefer there app to go. When that request can be met (technically), it will. The different possibilities include e.g.


no preference set: Goes to "internal storage"
preferExternal: Goes to SDCard (if available), else internal storage
set to "auto": if the app has widgets or declares services, it goes to internal storage. Otherwise it depends on device settings.


See also my answers here and here – the latter answer also details how you can (partially) override this.