no
By SD card I'm presuming you mean a memory card, It shouldn't matter if you have one or not as long as you have enough space/memory on your phone, you download the songs the same as you would with one, that can either be off vodafone live or by bluetooth etc.
No.
you can go some website to download free ds games. there are many online store offer free ds game download. After download the games, unzip the patch, drag and drop the games into the root directory of the MicroSD card. then they can work on your r4 card.
OPTION 1-get a microSD memory card and a usb adapter for the memory card then download to the card just like a thumbdriveOPTION2 get a usb cable for the phone and AND A microSD card, then download directly to the card while it is in the phone via the phone's usb (phone must be turned on)
free games download
you put the sd card from your phone into the bigger sd card in the coputer then u click download media and there you go its done just select your pictures.
I think you can download games on arcade town or some game download website
If you take the sim card out of your iphone then you wont have service peroid. Doesnt matter if the sim card is out and you have no service on your phone, your still paying no matter what.
get a iTunes gift card
romuation.com
If the phone has a sd card, you can load them to the card, if not then you either have to load them from your carrier, or have a usb cord made for your phone.
A r4 card is a card you can use to download games on, so you can play them eaiser!