Question: My screen got broken and I've been using my phone with a VNC Server installed on it, but this morning i'd the stupid idea of enable hotspot just to see if I can use my mobile data plan on my laptop, but when I did this, the wi-fi got disconnected from my router and now i only have access to my phone using adb shell.

I need to disable hotspot from ADB, already searched on google but didn't find anything, i also tried disable and enabling wi-fi, doesn't works.

Answer: 
```
  adb shell input keyevent 3 # home   

  adb shell am start -a android.intent.action.MAIN -n com.android.settings/.Settings

  adb shell input keyevent 20 # down                                                   

  adb shell input keyevent 20 # down

  adb shell input keyevent 20 # down

  adb shell input keyevent 66 # enter

  adb shell input keyevent 20 # down

  adb shell input keyevent 20 # down

  adb shell input keyevent 66 # enter                                                 

  adb shell input keyevent 20 # down

  adb shell input keyevent 66 # enter

```
A cleaner way to do it is by calling "service call" command.

For example on my phone I could call

```
# Start Wifi tethering
adb shell service call connectivity 24 i32 0 
# Stop Wifi tethering
adb shell service call connectivity 25 i32 0 

```

`Service call` will call the function number `24` in connectivity service (which happened to be the function that turn on tethering) and pass it `0` as argument (`0` would be wi-fi tethering, 1 would be usb tethering and `2` would be bluetooth).

Sadly service functions code change from one android version to another. This stackoverflow reply explain how to get the right function code for your current android version.
<https://stackoverflow.com/questions/20227326/where-to-find-info-on-androids-service-call-shell-command>

Also this is the functions list for connectivity service for the android version I am using (Nougat)
<https://android.googlesource.com/platform/frameworks/base/+/android-7.1.2_r1/core/java/android/net/IConnectivityManager.aidl>