If you have an IPod Touch or IPhone you can redeem it on there as long as you have wifi.
You can use a WiFi connection to use the iTunes store, but with AT&T you have to get the unlimited data plan when you purchase the iPhone.
ANSWER;you dont
Go to Settings>Wifi>On>Find one and connect.
In the app store. You can get into app store by plugging your iPhone into your PC and open itunes or just tap on the app store icon in your iPhone, but you have to have wifi to buy apps wirelessly.
Yes, you can use your iPhone 3G(S) to access the Internet if you have an available WiFi connection.
You should be able to open iTunes and listen to all the music stored there. A connection to Wifi is not necessary at all.
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You download it to iTunes either on your computer (via USB) or directly onto your device (via wifi or cellular network).
yep, you just have to have wifi
No, you can download songs through iTunes on the iPod touch through WiFi, other than that the only way is through a PC/MAC iTunes
Use open the app if you are on iOS 6. If you are not on wifi then it will fall back on your cellular connection (3G or LTE). The only problem is that AT&T blocks this feature on iOS 6 unless you have their shared plan