OS Upgradable for Smartphone

Hello steemian..today I wanna share you about smartphone upgradable according ma experience.
Yesterday I just upgraded ma smartphone Ios, it has been long time not upgrade from I bought it in 2016.
It doesn't need long time to upgrade it, it just for 40 minutes.
For upgrade it, open your smartphone settings about "phone device", then just follow the step has been prepared there. Do it step by step untill the upgradable success, then your smartphone will show you the screen like above. It's mean your smartphone has been upgradable.
Don't worry about losing your smartphone datas, it's never happen. Then your smartphone will more faster than before.
You will more easy to access every application on your smartphone.
Hope this usefull post for everyone.