Excuse me, oppoa37 sent a text message without prompting. What should I do?

Just turn on the phone settings ~ sound ~ message ringtone ~ settings.

Method for upgrading mobile phone

There are two ways to update the new version:

1. Online upgrade: You can check whether there is a new version pushed through "Mobile Desktop-System Update". If a new version is detected, you can click Download and Install. During the installation process, the mobile phone will be automatically turned off to ensure that the power of the mobile phone is above 40%, otherwise it will prompt that it cannot be operated.

2. Brush your teeth manually:

(1) backup data (contacts, text messages, etc. ) You can back up through "Mobile Desktop-Cloud Service" or operate through "Tools-Backup Recovery";

② Download the firmware package of the mobile phone in the "firmware download area" and store it in the root directory of the mobile phone;

③ Double clearing after backup: after shutdown, press and hold the power button+volume down button for about 10 seconds to enter the OPPO recovery mode, and select Chinese Simplified-Clear data and cache;

④ Select to install the upgrade package, and click the saved firmware package to confirm the upgrade.