My customer has app that creates a lot of data. The currently available user accessible amount of data on internal storage is 1 GB. Is there any way to extend this memory partition volume? The internal storage part for apps and system is more than 4.6 GB - maybe this could be smaller and leave some space for user accessible one?
There is no option to resize the data partition to make more memory available via internal storage so I think your best option is to install a removable sdcard to provide extra storage.