Smartphone is a mobile phone/handset that carry out a lot of functions of laptop/computer which normally have a touch screen interface, accessible to internet, capable of downloading applications, making voice calls and sending short message service(SMS).
The Good:
*Working perfectly with internet connection
*Very portable to keep in the pocket or bag
*Works very well with subscriber identity module (SIM)
*Smartphone battery can last more than 24 hours non stop
*It's used to download files and applications
*You can easily connect it with printer to print your document(s)
*It's always come with a charger to charge the phone when the battery is down
*Their are different games that comes with it which you can play at your leisure time
*It's easy to access STEEMIT on it and other social networks which am sure 95% of steemit users are using smartphone
The Bad:
*Using smartphone time to time can damage your eyes
*Getting addicted to it will make you become lazy at work or home
*It's costly to get a better one compared to other phones
*Your vital information(s) isn't private anymore if you lost it
*Using smartphone when driving is very dangerous and it can lead to accident
*It can only work very well when its connected to internet
*Most of the applications on the smartphone need to be mastered to dodge disarray when using it
I hope you've learned few things about the use of smartphones. Kindly upvote,comment and resteem. Wish you all compliments of the season