I have an iphone 3GS 4.1 version, and I wanted to get Simple Mobile for it. However, since it is unlocked, my friends advised me to get Edge, as it is apparently the only one, which could offer good speed on iphone as compared to Simple Mobile. I am really perplexed, as I am new to it, and I don’t understand many technical jargons as mentioned on several matter related to simple mobile. I would be thankful to you guys if somebody could help me with some appropriate advice regarding Simple mobile for my iphone. I am going to use only twitter, and I have a WIFI at my home, therefore, please advice aptly!