Cant ping Android device [closed]

Question

I am trying to ping my Samsung Galaxy S8 from the Raspberry Pi 3 but I do not seem to be getting a response.

I am using the command line arguments as ping 192.168.1.187 from my Pi, but it fails to receive a ping back. I had even tried using Android Terminal from the Galaxy S8 to ping wwww.google.com but it cannot send a ping.

This leads me to believe that the problem lies on the Galaxy S8. Is there any way to "allow" pings on it? Is there another method where the Pi can detect if the Galaxy S8 is connected to the same wifi network?

Notes:

• Router cannot ping to the Galaxy S8

• Raspberry Pi pings fine with every other device (Laptop, TV, other Pis)

• Firewall is disabled

• Galaxy S8's wifi is set to always on

Answer 1

Did you check the sleep policy of android phone. To save battery android may put your device to sleep.

Settings > Wireless & Network Setting > Wifi Settings > Press Menu button > Advanced > Wifi sleep policy , Set to Never.

Still if you're not able to ping, then in the android kernel (OS) iptables rules may be set to block the icmp packets. What is the android OS you're using ?

You can try nmap.

sudo nmap -sP 192.168.1.0/24 or sudo nmap -sP 10.0.0.1/24

Answer 2

As a first step check the IP addresses of the PI + S8 to see if they are both in the same subnet and connected properly.

The main problem might be that the ping application isn't available on android devices (at least i think so).

To fix this check the android store for PingTools Network Utilities and install the app on your smartphone.

Afterwards try pinging from your S8 to the pi.