Step 1: Access the Chrome browser on your Android device and go to the Google homepage as shown below.
Here, click on the Login (or account icon) to log in to Gmail on Oppo via the browser. After that, proceed to select the Account Management section.
Step 2 : Next, switch to the account management interface on Chrome, click on the Add Account option.
Then, we will move to the interface for logging into Gmail on Oppo. If you already have your own Gmail account, select Existing .
Step 3 : We will now start logging in with your Gmail account credentials as prompted by the system.
In the Gmail application interface for logging into Gmail on Oppo, swipe the screen from left to right or tap on the three horizontal dashes icon in the top-left corner of the device screen as shown in the image.
Step 2 : Immediately, a feature form on Gmail will appear on the device screen, tap on the arrow icon in the account section as shown below.
After that, select the Add account option to log in to a new Gmail account on Oppo using the Gmail app.
Step 3 : The program will display a form with various email account types supported by this app. Tap on the Google icon .
Next, we will proceed with the steps to log in to Gmail on Oppo following the instructions presented by Mytour.vn.
https://Mytour.vn/cach-dang-nhap-gmail-tren-dien-thoai-oppo-19447n.aspx
So, together we have just explored the steps to log in to Gmail on Oppo through the Gmail app or as described in the Chrome web browser for Android. Besides, if you still don't know how to recover data on your Oppo after successfully logging into Gmail on your phone, you can review the article on data recovery on Android to perform this.