Thanks Meter 25
Join Date: Jun 2013
Location: Planet Earth, Milkyway
same here, with a Samsung Galaxy Note 2.
It happened with several Android 4.3 & 4.2.2 ROM (my fav is PA).
Finally I gave up und went back to stock and then to a slimmed near-stock 4.1.2 ROM (Thunder Lite).
Suddenly and ever since there are no call in/out problems anymore.
Conclusion: for my Samsung device I suspect driver/or radio incompatibilities. I'll wait for Sammy to release a proper 4.3 stock ROM.
But that shouldn't be a problem for Nexus 4.