A quick google shows QR came out in 2002, had apps on all phone platforms in 2010, and was native to iOS in 2017. So at a minimum you are 5 years behind, although you could use an app fairly easily.
The average phone life before replacement is 2.5 years in North America [1] so you are somewhere between 2x and 4x outside the median: an outlier but not outrageously so.
1. https://www.statista.com/statistics/619788/average-smartphon...