This means that you need to enable the internet service on your iPhone. For eg. If you have a vodafone sim then you need to subscribe to their data plan that is enable their Internet services by dialling 111(this is ONLY for vodafone) But,if you already have Internet on ur iPhone and still get the same message, then u better contact ur ISP provider.
Both YouTube and Truveo have dedicated iPhone video applications.
youtube
You can try this videopower.me/tips/ct-download/download-video-to-ipad/ It can download videos from different websites like YouTube and can be transferred to iPad, iPhone, etc.
You can add a video on YouTube without going through iTunes on your iPhone by uploading it directly via your PC.
You would have to use the YouTube App for iPhones. You will not be able to upload a video from a mobile browser.
press image and then press youtube then type in what you want after you do that press the right button for five seconds and there you go.
Videora iPhone Converter (videora.com/en-us/Converter/iPhone) is a free iPhone video converter that converts video files, YouTube videos, movies and DVD's so you can play them on your iPhone. The software, developed by the creators of Videora, can convert all types of video files (avi, divx, xvid, flv, x264, vob, mpeg, DVD's, YouTube, etc.) into the proper video formats (MPEG-4, H.264) that play on the iPhone.
Quicktime, Youtube, and with the Skyfire browser, flash.
Press the video camera on the top of the screen and it will start tapping for Youtube.
Well, on Youtube you can watch them, but they come in three parts. I'm not quite sure but i think Youtube is the only video sharing website compatible with the iPhone. Hope this helped!
Yes, I just found on youtube video( link below)
search online video converter then copy place the youtube video in the convert video slot then press click arrow to witch one you wan to convert