### How do I cancel the scanning restriction on Vivo phone

Starting with Android 9, bandwidth throttling will limit all apps that test WiFi signals, allowing only four signal scans every two minutes. Scans need to be performed more frequently for best results. This restriction can be disabled in your phone settings.

#### Activate Developer Options

1. On the Settings page, choose System Management from the drop-down list and click.

Figure 1 Setting page

2. Go to the system management page, find About Phone, and click Access.

Figure 2 System management

3. Go to the About Phone page, find the version information, and touch.

Figure 3 About Phone

4. Go to the version information page and find the software version number.

Figure 4-1 Version information

When you tap 7 consecutive times, the message "Developer mode is enabled" is displayed. The developer options are activated.

Figure 4-2 Developer option activation

#### Disable Scan Tuning

1. On the Settings page, choose System Management from the drop-down list and click.

Figure 1 Setting page

2. Log in to the system management plane, select the developer option from the drop-down list, and click.

Figure 2 System management

3. Go to the developer options page and tap to enable the developer options.

Figure 3-1 Developer Options Page

Select WLAN Scan Adjustment under the Network tab and click Close.

Figure 3-2 Developer Options Page