A couple of days go I finally installed the 5.0.1 update for the iPad. I did this using the in-built ‘software update’ method, rather than using iTunes. Since then, I seem unable to get a 3G connection, even when the iPhone is sitting right there with a good 3G connection. Doing some research it appears this is one of those things, with reports stretching several iOS releases into the past.
Some people suggest that re-entering the APN settings does the trick (tried and failed), and that an alternative is a complete wipe and setup from scratch (not a restore). That means a few apps are going to loose data, whilst some will resync from the cloud depending on the capability of the app. Not a major pain, just an inconvenience for me. Will need to try it next time I have decent wifi connectivity.
**Update**: I did a full reset on the iPad, choosing to ‘Setup as New iPad’ when requested, and this has restored the 3G connection. As a word of warning, make sure that you have done a final iCloud backup and make sure that Photo Stream and iCloud documents are fully synced. I forgot to do the iCloud sync, and as a result lost a recent edit to a Numbers spreadsheet. Minor inconvenience, but it could have been worse.
**Update 2011-12-13** I seem to have lost 3G again, without having done anything to provoke it. I really don’t want to have to do a full reset again!