Well, then go back to other phone until Nokia will fix it... That's what I did. The way all of the mobile platforms have occasional issues with OS/firmware (some iPhone 4S/5 users still have battery life issues even after latest iOS 6.1+ updates) updates it is a very good idea to have a "spare" working smartphone (or "dumb phone") always available at home (with all your contacts always synced to this spare). I've learned this fact some time ago, other people should realize it too. If you don't have it - you can get a contract-free unlocked spares at Amazon - multiple brands are available (just make sure it is being sold by Amazon themselves)... Or just get the cheapest Nexus 4 directly from Google ;-)