This Is The Worst Mistake You Can Make When Buying A New iPhone

"Not buying as much built-in memory as you can afford up front," Derek Meister Geek Squad Agent at Best Buy tells us.

"Some phones may allow you to use an SD card, but it's never really the same as getting a phone with enough storage for all the photos, music, videos, movies and games you want to have with you at all times," he explains. That makes sense!

"This also often impacts resale value, if that's a concern for you. This is 10x as true for iPhones!"

So, there you have it--the one mistake many of us making when buying a new iPhone. The best way to avoid this is to look at your current device settings to see how much memory you are using. Your new device should have at least as much memory, if not 10-20% more.

READ MORE: The One Thing You Should Never Do When Using Streaming Netflix On Your iPhone