Am going to put a 16gb SD card in a phone that's run out of storage and has never had one before.
Whenever I do this I agonise over the option to use it as portable storage or make it part of the internal storage. Is there a best practice for this? I think my main thing is that if I ever need to upgrade the card it will be a nightmare if it's part of the internal storage although cheap handsets and built-in redundancy have meant that I've never learned a lesson the hard way. Photos are always sent up to Dropbox or Google Photos (for better or worse).