Hi
I am finish with the project in which i connected my iphone to arduino ethernet shield over wifi.
Now i want to increase the range since wifi doesnot provide with a great range.
Is it possible to connect my iphone to arduino ethernet shield over internet via cellular data not the wifi ?
You have to put your Arduino on the public Internet. Usually that is done by setting up Port Forwarding on your Internet router. Once you do that, any computer in the world, including your iPhone, can connect to that port on your home Internet address and reach your Arduino.