How can I use my smart phone in studying English?

First of all,stop using your smart phone in your class unless you need to use a dictionary.Then,you can listen to VOA or BBC by using your phone,Besides,you can read some English essays as well.

There are numerous apps available for free. Do you have android or Apple? Google Translate is pretty good for single words or short phrases, but not whole sentences. The Youtube app gives you access to lots and lots of free EFL videos. Just type in "English pronunciation" or "English collocations" or "English prepositions" or whatever you're focusing on and you'll get lots of help.

And sure cost you a bit too - 10 dollar a page.

Hi Ray-yang,
Download dictionary and start reading some article or books on your smart phone, if you feel prblem while reading or unable to understand the meaning of any word than check into the dictionary.
Hope that it will help you.

You may listen English music and download books for reading. Also there are a lot of different dictionaries for smartphones