There have been issues reported of not getting calls at all, if that's the case be sure to have a nandroid, no one mentioned in this thread will be responsible for anything that happens to your device.
For the record this will remove stock sense dialer so make sure to make backups!
How to install:
1. Download zip Lollipop here - MM here
2. Place in SD or EXTSD if you downloaded on your computer.
3. Reboot to recovery.
4. NANDROID (seriously don't get mad at me or @asif4self or @bumpaneer if anything goes wrong and you don't have your own backup)
5. Wipe Dalvik Cache + Cache.
6. Install zip.
7. Reboot and enjoy!
If you have any questions just ask here. Also, don't forget to thank @asif4self & @bumpaneer.