My internet doesn't work on my phone any more The internet doesn't work on my phone. It worked with my orange sim card and it previously worked with this sim card, the problem seems to have arisen after my number was ported from the orange sim to the vodafone one. Went into vodafone and they tried one of their vodafone sim cards in my phone and the internet works. Theyve given me a new sim card but I still can't access the internet, on my mobile data setting it says "unconnected because the service is unavailble" any ideas as it doesn't seem to be a problem with the phone?
I have an Android phone on EE that experienced the same issue, you could try the following steps (below are for Vodafone UK): 


Tap the Menu button
Tap Settings
Tap Wireless and networks or More... (depending on your version of Android)
Tap Mobile Networks
Tap Access point names
Tap the Menu button
Tap New APN
Enter the following data into the onscreen form, without changing any other settings;
Name - Vodafone Internet
APN - internet (PAYG - pp.vodafone.co.uk)
Username - web (PAYG - wap)
Password - web (PAYG - wap)
MMSC - http://mms.vodafone.co.uk/servlets/mms
MMS Proxy - 212.183.137.12
MMS Port - 8799
Authentication type - PAP
APN type - If given a choice, select internet+mms, if the keyboard appears enter *
(As a check, the image below shows blue text in the fields you should have completed)
Tap the Menu button
Tap Save
Enable the newly-added APN by ensuring the line is ticked, or the radio button is lit by tapping on it
Check the notification bar for 4G, H, 3G, E or G with up and down arrows beside it, which will indicate your connection is working


These instructions are from http://www.geeksquad.co.uk/articles/vodafone-apn-settings and their EE ones worked for me. 

Good luck!