Don't Install If You're Unprepared
While some Galaxy A users will see a boost to their device's performance, others will run into problems. Unfortunately, you can't predict which group you'll fall into. All you can do is prepare.
We highly recommend doing some prep work before you transition your device from Android Nougat to Android Oreo. A little work will go a long way toward preventing issues and headaches.
We've put together a step-by-step guide that'll take you through the process we use every time we install a new piece of software on our Galaxy phones.
For example, if you use your Galaxy A at your place of employment, you should check in with your IT department (if you have one) before you install the software. Oreo could have a noticeable impact on the apps and services you rely on.
If you don't have a lot of time to commit to preparing yourself and your Galaxy A3, Galaxy A5, or Galaxy A8 for Android Oreo, the one thing you absolutely need to do is check on your backups.
Data loss is rare these days, but it's better to be safe than sorry. Make sure the important data you store on your phone is safe before you move to Oreo.