I have an iPhone SE and I've been extremely disappointed in its quality. After the warranty expired, the touch screen started giving out, a microphone stopped working, and the LED backlight started fading. I don't recommend the phone
I know five people with iPhone SE devices (I recommend them to older family members who aren't phone addicts and to anyone who baulks at the cost of a new phone) and all of them are still working perfectly. I do recommend the phone.
Given the hundreds of millions of iPhones Apple sells, there inevitably going to be some lemons.