My Nokia 6220 unit mobile phone unit came with a 1 GB memory card. Being a big user of data, I am planning to upgrade or replace with a gigantic 8 GB one. This is what my friends and colleagues has been disagreeing about. They are telling me that this move will make my phone’s operational speed really slow. Now, is there some truth to this? I don’t want to waste money buying a certain memory card that I cannot even use. Another thing is that I am looking for a way to transfer the old files coming from my previous memory card to a new one. How do I do it in the fastest manner?