Hii bhanu prakash,
The Internet of Things as a network of networks of uniquely identifiable endpoints or ‘things’ that communicate without human interaction using IP connectivity be it ‘locally’ or globally.
So anything that requires human interaction or control is not considered an element of the IoT So, at the simplest level, we are not including smartphones, tablets, PCs, etc.
Cellphones that send data synchronously using the Real-time Transport Protocol are considered non-IoT elements while devices communicating asynchronously could be.
Hope this is usefull!