I try to connect to Youtube it says "cannot connect to Youtube"

contact your service provider

Make sure you are connected to the internet. Go to Settings>General>Network>Enable Cellular data (for iPhone) For iPod Touch, make sure you are connected to an operational WiFi network. You can do this by just going to the Safari application for example and doing a google search to check and see if you have a usable connection. If these do not work, quit the running apps by double clicking the home button then holding down an icon at the bottom of the screen then exiting out of the apps one by one. If this does not work, restart your iPhone or iPod Touch (it is okay to restart because the jailbreak on iOS 4.2.1 is untethered, meaning you can turn off your device without having to re-jailbreak) Try to open youtube when the device turns back on. If this does not work, go to Safari and search "youtube mobile" and click on the first link. This will direct you to the browser version of YouTube. Once on that page, tap the + button at the bottom to add this page/link to your home screen. It will function like the regular YouTube app, and in my opinion, its faster.

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You just need to install Push Fix from Cydia. Click here to see the step by step instruction on how to do that.

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The youtube app on the phone is provided by the network (original provider of the phone) so unless t-mobile provide that (and other services) you can't use it... but you can connect to the normal youtube by using safari it just wont be optimised for the iphone like the app is

If you have an iphone 3G there is a direct connection to an iphone friendly version of youtube but you can of course still access youtube from safari.. however be aware that if you do not have a wi-fi connection or at least a good 3G connection you may not be able to view any youtube video due to lack of bandwidth

Hi This is vijay from india, just copy all these three files and with the help of Winscp overwrite the existing ones. it will work. in my case it is working alright.

Had problems with Safari and found resetting network settings fixed the problem