No problem glad you got a defect problem free phone.
That dead spotter app is the number one thing I do on iPad's and iPhone's saves you another trip back to the Apple Store.
I download that app in the parking lot or in store when I buy a device. Helped me with one of the iPhone 6 I bought. They wanted to charge me restocking at a T-Mobile store but I never left the site and showed them the pixel. They returned it with no fee and I got another 6 about a month or so later on Cyber Monday.