Nexus 4 has a 4.7″ 720p display, delivering 320 ppi. It is powered by a 1.5 GHz quad-core Qualcomm Snapdragon S4 Pro processor, featuring four Krait cores and the class-leading Adreno 320 GPU. In addition to the fast processor, the Nexus 4 also packs 2 GB of RAM and either 8 or 16 GB of internal storage.
Nexus 4 is slowly becoming a forgotten device as far as Google are concerned. Google did not provide official Marshmallow support for Nexus 4. However the CyanogenMod community has continued to do so and CM 13 nightly is now officially available for Nexus 4. A detailed tutorial on how to install CM 13 on Nexus 4 is given below.