By default the Wi-Fi isnt working on Nexus 4 with KitKat 4.4.3 stock firmware, with the latest Franco Kernel 3.4.88 #208. Download the Wi-Fi Fix from here, here or here. The archive contains 2 files: 4.4.3_Wifi_Fix.zip and Revert_4.4.3_Wifi_Fix.zip.
To fix the Wi-Fi not working for Kernel Franco 3.4.88 #208 on Nexus 4, just copy 4.4.3_Wifi_Fix.zip file to your phone via USB cable, then go to recovery and flash the zip. If somehow you want to undone that, flash from recovery
Revert_4.4.3_Wifi_Fix.zip and youre done.
Revert_4.4.3_Wifi_Fix.zip and youre done.
To install recovery on your Nexus 4 just download Nexus Root Toolkit 1.8.3 from here, unlock your phone, then root it and install TWRP v2.7.0.0. Use Quick Boot to easily boot into TWRP. To flash the latest Franco Kernel on your Nexus device use Franco Kernel Updater from Play Store. (your device must to be rooted).