In this guide, we will help you install TWRP Recovery on the Oppo A37f device. This guide contains both written instructions and a video tutorial to help you install it quickly. Make sure to download the files required and jump straight into instructions on how to install TWRP on Oppo A37f.
Keep in mind that before heading over to the process, you will need to unlock the device bootloader first. As smartphone OEMs provide a locked bootloader to their devices due to some security concerns, in order to install any third-party file, you will need to unlock the bootloader. Then you will be able to install TWRP Custom Recovery on your Oppo A37f device and root as well. The TWRP Recovery can also take Nandroid backups, restore, wipe out system/data/cache, and more.
Oppo A37f Overview:
Oppo A37f sports a 5.5-inch Optic AMOLED display with a screen resolution of 1440 x 2560 pixels protected by Corning Gorilla Glass 5. It is powered by a Qualcomm Snapdragon 835 processor clubbed with either 6GB or 8GB RAM and comes with onboard storage of 64/128 GB. No microSD card support. Oppo A37f comes with a Dual 12 MP Camera at the rear with an aperture of f/2.1 and comes with OIS, phase detection autofocus, and LED flash, it also has 8MP at the front for selfie shoot. The smartphone will come out of the box with Android 7.1.1 Nougat wrapped under Oxygen OS. Oppo A37f supports dual sim and has a Type-C 1.0 reversible connector. Other connectivity options are Wi-Fi, 4G, 3G, Bluetooth 5.0, NFC, Fingerprint (front) and GPS.
TWRP Recovery and its Advantages
Team Win Recovery Project is an open-source software custom recovery image for Android-based devices. It provides a touchscreen-enabled interface that allows users to install third-party firmware and back up the current system which is functions often unsupported by stock recovery images. – Wikipedia



Link for recovery img?