In my case, buy a large SD card to put the apps on, then find out that only the primary storage can hold apps. I think this limitation has been lifted in more recent Android versions, but - of course - I can't upgrade.
Moving all my photos and ebook .pdfs off did alleviate the burden somewhat, but hasn't completely solved it.
My current workaround for very large apps is to uninstall, redownload, install. Apparently, holding both the update and the installed app uses much more space than doing a fresh install.
Sony has fairly unique system: Install an app, move it to the SD card, the update will install it back to internal memory. You have to move it again, manually. And again, and again, after each update.
Or just leave them all on the internal system, until a system utility wakes up to the fact that there is not enough space, and suggest moving apps to the sdcard. After few rounds of updates, rinse and repeat.
Moving all my photos and ebook .pdfs off did alleviate the burden somewhat, but hasn't completely solved it.
My current workaround for very large apps is to uninstall, redownload, install. Apparently, holding both the update and the installed app uses much more space than doing a fresh install.