Although, both Moto X Pure/Style and OnePlus 2 are near stock experience devices like Nexus devices but there are still some things that Nexus devices has better, like the Dialer app.
The Dialer app on your Moto X Pure and OnePlus 2 may seem similar to stock Lollipop dialer but it is only basic, not the Google Dialer app that come with Nexus phones.
But thanks to Spasticdroid from xda, who has successfully put together a recovery flashable zip file to install the Google Dialer 2.1 from Nexus devices to Moto X Pure, and luckily, it works for OnePlus 2 as well.
Just download the zip file from the link below and flash it to device using a custom recovery like TWRP.
[icon name=”download” class=”” unprefixed_class=””] Download Google Dialer 2.1 (.zip)
If you don’t have TWRP recovery installed on your device, below are links to step-by-step guide for TWRP installation for both the devices: