I upgraded from an iPhone 12 to a 15pro. I buy my iPhones direct from Apple UK. The first 15pro I received didn’t accept any payment methods (cards) because the NFC chip was faulty. Apple replaced it with a new phone that I received within 48 hours of reporting the fault. The second 15pro wouldn’t send or receive messages, texts, or make calls; the modem chip was defective. Apple replaced it again within 48 hours, with much apologies. Unfortunately I had already swapped out my physical SIM for an eSIM, so it was a bit of a challenge to get the third replacement phone working (my physical SIM had been disabled, and the QR card I had was tied to my previous faulty phone). EE were very good, and got everything working within half an hour: since then the phone has been behaving just fine. Whilst I accept that I have been unlucky with the iPhone 15pro, it’s still a good phone, especially with the LiDAR capabilities (which is why I upgraded in the first place). Apple needs to take care of two things: firstly their QA processes need strengthening, both faults were hardware and should have been picked up during the manufacturing process; secondly, their delivery company in the UK is useless, each replacement phone had to be collected from the depot because the delivery driver couldn’t be bothered to go through our security (I live in a secure gated domain, that entails the driver to engage brain to penetrate).