Friend could not call me and found I could not call them but put the phone into GSM only mode and its working fine now.
Work colouge looks to be having the same issue.
These links are referral codes
Geekzone broadband switch | Eletricity comparison and switch | Hatch investment (NZ$ 10 bonus if NZ$100 deposited within 30 days) | Sharesies | Mighty Ape | Backblaze | Coinbase | TheMarket | My technology disclosure
freitasm: Related to this by any chance? http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10652064&ref=rss