Do I copy the folders [with the movies, apps, etc] from the old external 8GB MicroSD card to the new 32GB MicroSD Card and put it back into the phone [Galaxy S2] and will it work or I need to reformat everything again? Will my apps work fine or I need to do something else? Yes the phone also has a 8 or 16 gb memory built in. Yes I bought a 8gb before.. I thought it will never fill up but I was wrong. Within a month it was almost full... so I decided to get the 32gb... I think I will not fill up this one so fast.. but I never know. The 64 GB i too expensive for now at least