I read about the Xposed framework in xda and other websites.some websites have really good tutorials about it.So what I understand is that we can modify a function and its return values using the Xposed Framework.
I have created and Xposed Module For Changing (MASKING) the IMEI No of the Phone
Change Means How Other Application gets the IMEI No of the device using below code
As you all know,The Value is not permanent as it is an Xposed Module 🙂
Enable module in xposed framework
Come back to app and enter new value
Go to xposed module
Open framework page
Do a soft reboot
Open the app
And you can see new value
It's a simple app which works only if you have xposed installer installed.