Add screenshots, updated setup wizard to cover Bluetooth battery conf

Author: XiTatiON

docs/EN/SettingUpAaps/SetupWizard.md

@@ -110,6 +110,47 @@ Click the "NEXT" button:
 
 ![image](../images/setup-wizard/Screenshot_20231202_130002.png)
 
+(setup-wizard-bluetooth-battery-optimisation)=
+
+### Bluetooth battery optimisation
+
+Newer versions of Android have added battery optimisation to the system Bluetooth application too. 
+
+As well as Disabling battery optimisation for **AAPS**, you will likely need to also disable this for the Bluetooth system app. Failure to do this may lead to pump connection dropouts and issues.
+
+***NOTE: The xDrip documentation covers how to do this here: [xDrip documentation](https://navid200.github.io/xDrip/docs/BluetoothBatteryOpt.html)***
+
+Follow these steps on Android 16, other versions will varies slightly from the provided screenshots:
+
+1. Open Android settings and search for **Apps**, and open the Apps settings.
+
+   ![settings_apps](../images/setup-wizard/settings_apps.png)
+
+2. You will see the App settings, however we need to expand to see all apps, click on **See all apps** to expand.
+
+   ![settings_apps](../images/setup-wizard/apps_not_expanded.png)
+
+3. As the Bluetooth app is a system app its hidden by default, we need to show system apps. Click on the **three dots (hamburger)** on the top left (1). Then click on **Show System** (2).
+
+   ![settings_apps](../images/setup-wizard/show_system.png)
+
+4. Search for the Bluetooth App and then click on it to open its settings.  
+   ***NOTE: it may be called **Legacy Bluetooth** on some phones***
+
+   ![settings_apps](../images/setup-wizard/search_bluetooth.png)
+
+5. Click on the **App battery usage**
+
+   ![settings_apps](../images/setup-wizard/app_bluetooth.png)
+
+5. We need to expand the **Allow background usage**, click on the section highlighted in red to do this.
+
+   ![settings_apps](../images/setup-wizard/app_bluetooth_allow_background.png)
+
+6. Select **Unrestricted**
+
+   ![settings_apps](../images/setup-wizard/app_bluetooth_allow_background_unrestrict.png)
+
 ### Storage permission
 
 **AAPS** needs to log information to the permanent storage of your smartphone. Permanent storage means that it will be available even after rebooting your smartphone. Other information is just lost, as it is not saved to permanent storage.