Yes unless it is your WiFi you are using so technically you are still paying for it
yes, you can just use wifi access to use the Internet on your iPhone
yes all you need to use is FaceTime (built in) and its free on wifi
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).
No. You have to buy the WiFi router yourself. You can buy them from AT&T, Linksys, Verizon, and many others or you can just go to Starbucks and use their WiFi.
YES, It's free. but just can use at apple product. for example: iPhone 4 , iPhone 4S, iPad touch, Recently At&t added Free FaceTime over 3G before it was only offered on wifi. Source of info is added below in links
like all models of the iPhone you only need wifi access if you want to use the wifi facility on your handset. Using the wifi mode allows you to use your home or other source of broadband ADSL, rather than using the data allowance provided as part of your network package from your network provider. If you have unlimited broadband then using wifi is free and there is no limit of the data used home or other wifi such as free hotspots. Also certain applications use the wifi network such as iMessaging which is free also when used via the a wifi network. in essence you do not need to enable the wifi mode on your handset but it has it's advantages, namely cost savings on data allowances.
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.
Yes, you can use your iPhone 3G(S) to access the Internet if you have an available WiFi connection.
If it is wifi then no it does not use your credits.
Yes, there is no charge to use wifi, no data limit. you just have to get a source of wifi.
It's free but it only works with wifi 😋
YES, It's free. but just can use at apple product. for example: iPhone 4 , iPhone 4S, iPad touch, Recently At&t added Free Facetime over 3G before it was only offered on wifi. Source of info is added below in links