Should be simple, pls help - selectOneChoice valueChangeEvent not fired

Question

Hi all, please help! This should be so simple and just work, but I couldn't get it after hours!
I have a simple selectOneChoice tag in my jspx page, with two selectItems with static values - nothing fancy. I just couldn't get the valueChangeEvent associated to it to fire. I have read many posts here, some say that's how it works if the backing bean scope is request because it's got reset back to the default value each time so value never got changed. Yes my backing bean is set to request scope, but it didn't look like it tried to set the default value every time I submit the form, when I tried to set the value to a variable in the backing bean and its getter didn't get called after the form is submitted (it got called the first time the page loaded). For other reasons, I can not set the bean scope other than Request. Please help if you have an idea -
<tr:selectOneChoice label=""
binding="#{backing_eef_expenseapprove.selectOneChoice1}"
id="selectOneChoice1"
unselectedLabel="#{resources['ets.select']}"
valuePassThru="true"
value=""
autoSubmit="true"
valueChangeListener="#{backing_eef_expenseapprove.valueChangeApprove}">
<f:selectItem binding="#{backing_eef_expenseapprove.selectItem3}"
id="selectItem3"
itemValue="1"
itemLabel="Approve"/>
<f:selectItem binding="#{backing_eef_expenseapprove.selectItem4}"
id="selectItem4"
itemValue="2"
itemLabel="Reject"/>
</tr:selectOneChoice>
By the way, I used JavaScript alert to test the values are actually changed every time I switch the dropdown.
Just in case you are wondering, the application was a 10g ADF app, migrated to 11g, all components are now Trinidad. As far as I can tell, that shouldn't matter.

Answer 1

Basic troubleshooting from the User's Guide is reset, restart, restore (first from backup then as new).  Try each of these in order until the issue is resolved.
If basic troubleshooting fails to resolve the issue, the next step is to take the device to Apple or an Apple Authorized Service Provider for evaluation.
Apple does not repair devices.
iDevices are not user servicable.
Any attempt by a 3rd party to repair the device will void the warranty and all rights to support from Apple and these forums.