Here in this guide, we will share with you the steps and download links on How to Unlock Bootloader on Nokia 1 Plus. Bootloader unlocking is necessary to install TWRP Recovery, Flash any Custom ROM, or installing Root/Mod files. So, here is the full guide mentioned with all required details about unlocking the device bootloader, Nokia 1 Plus specifications, download links, and steps. If you’re an advanced user, you must have to do this method. But make sure that unlocking the bootloader may void the device warranty (if applicable).
A special thanks to one of the senior members of XDA, Hikari-calyx for sharing the guide with us. First, check out the device specifications and then we will discuss the TWRP Recovery and its advantages.
Nokia 1 Plus Specifications
Nokia 1 Plus smartphone was launched in February 2019 and it comes with a 5.45-inch display. The smartphone is powered by a 1.5GHz quad-core MediaTek MT6739WW chipset. It comes with 1GB of RAM and an 8GB of internal storage which is expandable via MicroSD card.
The handset runs on Android 9.0 Pie (Go edition) and packs a 2,500 mAh battery. On the rear side, the device sports an 8MP primary camera with an LED flash and autofocus. While the front features a 5MP selfie camera.

i Try to unlock boot loader using this article in my nokia 1 plus. but i can enable oem unlocking. this option show gray color and i cant enable why?