Let's do the math:
iPhone 8 (2017): $799
1 BTC in 2017: $3,000 (you could've bought 0.266 BTC)
iPhone X (2017): $999
1 BTC in 2017: $3,000 (you could've bought 0.333 BTC)
iPhone 11 (2019): $599
1 BTC in 2019: $7,000 (you could've bought 0.085 BTC)
iPhone 12 (2020): $599
1 BTC in 2020: $10,000 (you could've bought 0.06 BTC)
iPhone 13 (2021): $799
1 BTC in 2021: $40,000 (you could've bought 0.02 BTC)
and so on.......................