Windows Dual SIM Bugs

Windows 6.5 Dual SIM, Taiwan Make, Looks like HTC Touch Diamond 2.
Having 2 Problems.
1) Not able to Dial using International codes (+91xxxxxxx. +1xxxxxxxxx etc.). Works on using "00" instead of "+".
2) Both SIMs not receiving On Screen Display (OSD) of service messages eg. balance amount, call duration after a call is disconnected. Not able to access services using *123#, *111# etc.
Any remady

Kindly Help.

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