The developer of SMS GV Extension and Phone GV Extension has released their source code so that someone can continue his work and hopefully someone will produce an iOS 6 compatible version of these tweaks.
Dev's Post
https://plus.google.com/app/basic/s...413782/posts&sparm=cbp=108q6p0lbo32t&sview=25
Source code and documentation
https://github.com/mrzzheng/GVExtensions
Dev's Post
https://plus.google.com/app/basic/s...413782/posts&sparm=cbp=108q6p0lbo32t&sview=25
Source code and documentation
https://github.com/mrzzheng/GVExtensions