I've notice that when my phone is in a wifi area which has low edge/gprs signal, it will switch between uma and the cell towers. The problem with this is that i've missed calls as I get the notice of a miss call but the phone doesn't ring. I've been able to reproduce the problem at other locations. If I turn off wifi and only use cell towers, the problem goes away. Is there away of always setting calls to towers and not wifi? Do other people have this problem?
Go to Manage Connections>Wifi Connections>Select the Wifi you are on>Menu>Edit>and make sure the "Allow inter-access point handover" box is checked. I was having the same problems untill I did that and have not had a dropped call since when changing from Wifi to the towers.
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