vodafone sure signal problems issues troubleshoot People are experiencing  issues with Vodafone Sure Signal You can also refer to the official Suresignal troubleshooting thread. http://forum.vodafone.co.uk/t5/Vodafone-Sure-Signal/Troubleshooting-Please-read-before-posting/td-p/679029 The issue is likely because of the upgrades so we will need to deregister the Sure Signal and then re-register it. If you still can’t log in then send an email to tech support and they can help further. Take a look here for how to get in touch with the. http://forum.vodafone.co.uk/t5/notes/privatenotespage/tab/inbox