No you do not need WIFI to use the iPhone. The iPhone works with either 3G or WIFI. Some apps require WiFi to download or run depending on their size. I find wifi works best though and is faster. YouTube videos are extreemly clear and crisp with wifi.
No, you don't but skype will be MUCH slower with not very good connection if you use 3G, so best to use WiFi if possible. :)
No, EDGE connection will allow you to connect.
Wi-Fi is free to use on the iPhone. If you know the password of the Wi-Fi or it is unprotected. There is no cost to use Wi-Fi through the iPhone but there maybe a charge if you use Wi-Fi at a coffee shop (or place like that).
Wifi is required for Pandora Internet Radio.
Yes, the iPhone 3G has Wi Fi.
Only on the iPod Touch and iPhone. Where only the iPod Touch can use only Wi-Fi, the iPhone can use Wi-Fi and 3G Network.
To get Wi-Fi on your iPhoneGo to Settings > Wi-Fi > Turn it on > and choose your connection.
Do I have Wi Fi?
No not really,because it's not a big thing like other phones with contracts.It's not as expensive as the phones with contracts because they have wi-fi and i also think that an iphone has wi-fi.
you can use any wi-fi signal to use your DS lite
no, you just have to have a wi-fi router and Internet
from vivek yes
no
Yes but if you have a password for your wi-fi you need to put the password. Hope this helped!