Z10 need to periodically reset
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It seems there are times when my Z10 reverts back to some stage in its life and forgets what's programmed. This morning my calendar notification went off and it was not what was programmed. I checked the settings and they were totally different than what I had programmed. I tried to set them to my preferences but couldn't access the files on the media card. So I removed the battery and then installed it again (a reset as I understand it) and voila everything was ops normal. And this is not the first time this has happened. So, why does the Z10 do this? I change batteries (I have 4) every several days when the power usage of the phone requires it. I have all the latest updates and few applications.