Xperia Z3 was the flagship device of second half of 2014. Xperia Z3 runs on a 2.5Ghz quad-core Qualcomm Snapdragon 801 processor, 3GB of RAM, 16GB internal storage and a 3100mAh battery. The 5.2″ IPS LCD display has a 1080p resolution and utilises Sony’s Triluminuous backlighting technology. The Xperia Z3 is also IP65 and IP68 compliant, meaning it’s good for those dusty or wet environments. Z3 also has a new impressive camera, featuring a 20.7MP.
Sony devices are a bit slow to get the custom ROMs but CyanogenMod team have finally developed an official CM 12.1 nightly for the Xperia Z3. It will improve the performance of Z3 and also remove the bloat. Follow this guide if you are interested in installing CM 12.1 ROM on Xperia Z3.