The following is the process of monitoring the serial port of the Arduino using a smartphone. If you are new to PHPoC Shield for Arduino, do step by step.
Connect PHPoC shield for Arduino to your Arduino.
Insert a USB WIFI dongle to the shield.
Connect the Arduino to your PC with a USB cable.
Run Arduino IDE on your PC.
Write sketch below and upload it to your Arduino.
With your smartphone, connect to the wireless network starting with “phpoc_”.
Run a web browser once it is properly connected to the wireless LAN.
Connect to the shield by entering “192.168.0.1” in the address bar.
Select “Web Serial Monitor” on the main page.
Select the speed to “9600” and press the “Connect” button.
Once the connection is established, you can monitor the serial port of Arduino.