For me it’s the notification light you used to find on older phones, was particularly good to know if your phone was charged without picking it up
It’s very much a mid-range device but so was the price. It was still an easy decision since it is literally the only modern smartphone in existence that matched my minimum requirements. I’m coming from LG V20 so I still had to let go of FM-radio, optical image stabilization, IR blaster and the hi-fi DAC.