Mike - Basic
Smartphones are becoming more powerful every day and nowadays many people use them to access the internet. This is really common in China and India, where smartphones are becoming cheaper and easier to buy.
In Japan, almost 60 percent of people use their smartphone for the internet. This is a big number compared to the US. In the US, only 15 percent of people use only their smartphones, and not a personal computer with home internet service.
Definition: (adjective) having a lot of power
Ex: My smartphone is not very powerful.
Definition: (adverb) at the present time
Ex: That brand of smartphone is very popular nowadays.
Definition: (adjective) happens often
Ex: It is common for people to watch videos on their smartphones.
Definition: (adjective) low in price
Ex: The smartphones are very cheap at this shop.
Definition: (verb) the action of using something
Ex: Please teach me how to use this device.