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Upgrade, sim only, or restart on phone, new APN settings stop Internet working, any ideas?
The APN settings won't have changed.
There have been other threads about this configuration message and this will always automatically be sent when the SIM is changed or when there has been a software update to the phone. The advise is to text WEB to 40127, this will update your SIM on the network and configure your APN settings.
Also further information here: What should I do if I have no or slow data connection?
and on the devise support: Device Guides
And, when those settings are applied, my Internet connection fails, and have to revert to previous settings, I have discussed this with voda at length, they aren't sure why, but acknowledge it happens to me...