Wait if You're Worried About Problems
If you're concerned about iPhone 11 hardware or software problems, you might want to wait a few weeks before picking up your new phone.
The new iPhone models run iOS 13 out of the box. Apple's new operating system isn't out yet, but it will almost certainly debut with an annoying set of bugs and performance issues.
Apple will likely roll out several iOS 13 bug fix updates in 2019 so it might be worth waiting for the first batch of bug fixes to arrive before committing to a new iPhone.
New iPhones sometimes debut with hardware issues as well. iPhone 8 and iPhone 8 Plus users encountered bloated batteries and crackling earpieces. Apple eventually fixed the crackling earpiece issue, but it took a little bit.
If you're concerned, you might want to hang back and see what kind of problems early adopters are reporting in the first couple of weeks.