Hi Vijay,

>> I don't like that this is being exposed on the modem 
>> interface.  This really belongs on a separate atom.  Not all 
>> modems are going to be LTE enabled yet...
>>
> Preferred mode is modem property on which mode modem is going to
> operate.
> Currently we have restricted this to read only for below reasons.
> 1.No proper business case on why would user needs to play around this.
> Unless operator give privilege to user to configure the modem behavior.
> 2.Setting the preferred mode from user side would bring in new API for
> driver essentially. 
> 

So again, this property is simply not going onto the Modem interface.
It doesn't belong there since not all modems will be LTE enabled.  In
particular those pesky CDMA-only modems or 3G/2G GSM modems.  You really
need to put this on a separate atom dealing with IMS.

And as mentioned before, I still see no actual use-case for this
property.  Until the usecase is presented, this property should be dropped.

Regards,
-Denis