the Bluetooth is horrible on this phone, iPhone 15 pro max, and I am on my second one - apple sent me a replacement to “fix” this issue and the replacement has the same problem. I have never been more frustrated, disappointed and beyond unhappy with an apple product and the support they have provided (or lack thereof) for this issue. Went to the store multiple times, called support I don’t know how many times, they tested, reset my phone and still I have an awful device - I have to toggle with it at least 8 times a day to get the Bluetooth to work. I rely on the Bluetooth to log into my work, to run my house, etc, ans I’m at a loss for what to do. Apple has provided no help as they do not seem to realize there is an issue - lack of thorough or adequate testing or a bad batch of iPhones that passed quality control that they don’t want to make right for customers, I’m not sure which is going on, possibly both.