Back Up Your Phone
You should back up your Android Phone today if you have one. This will allow you to quickly switch to the new Galaxy S8 or S8+ without waiting. The odds are very good that your phone is already backed up if you use one of the automated options.
Here's a guide on how to backup your Android phone. This includes apps, data, and contacts as well as other info.
If you are on iPhone, you can easily switch from iPhone to the Galaxy S8 using the Samsung Smart Switch app to move your contacts, photos, apps, device settings, messages, music, calendars and more.