2020 predictions Internet of things devices is around 20 to 30 billion

Gartner forecasted that 6.4 billion connected things will be in use worldwide in 2016, up 30 percent from 2015, and will reach 20.8 billion by 2020. In 2016, 5.5 million new things will get connected every day.

Gartner estimates that the Internet of Things (IoT) will support total services spending of $235 billion in 2016, up 22 percent from 2015.

The predicted number of devices in 2020 not including smartphones, tablets and computers are down to the 20-30 billion range from earlier predictions of 50 billion to 1 trillion.