Nokia Lumia :: 900 Has No Network Time Facility

I recently bought an unlocked Lumia 900 in Australia and run it on the Telstra Network. I find it very irritating that the phone has no facility for date and time to be set from the network, particularly as my Lumia 800 did have this facility, as have alll my smartphones for the last few years, including iPhones and various flavours of Android phones, all on the Telstra network. Why does the Lumia 900 not have this facility as it is definitely supported both by the Telstra network and by the previous Lumia 800. It also doesnt help that the Lumia 900 is very inaccurate without this facility. It is beyond belief that the phone does not have what I consider to be basic, taken for granted functionality.