"Apple dominates North America and Western Europe with a sales share of over 50% and 30% respectively."
From "Global 5G Smartphone Sales Penetration Surpassed 4G for First Time in January 2022" posted Wednesday by Counterpoint Research:
Sales penetration of 5G-capable smartphones reached 51% globally in January 2022, surpassing the penetration of 4G smartphones for the first time, according to Counterpoint Research’s Global Monthly Handset Model Sales Tracker. China, North America and Western Europe were the biggest drivers of this growth. China had the highest 5G penetration in the world at 84% in January. The push for 5G from Chinese telecom operators, combined with the readiness of OEMs to supply competitively priced 5G smartphones to consumers, enabled this growth.
The 5G smartphone penetration for North America and Western Europe reached 73% and 76% respectively. Apple dominates North America and Western Europe with a sales share of over 50% and 30% respectively. After Apple shifted to 5G in October 2020 with the iPhone 12 Series, North America and Western Europe saw a natural increase in the sales penetration of 5G smartphones. These regions are expected to continue contributing substantially to 5G sales globally, as even without offering competitive specs, there is an immense and ongoing demand for a 5G upgrade within the iOS user base. This demand is also fueled by iPhone users who are ready for new devices after years of holding on to their older iPhones. For many, holding periods are nearing four years, the average replacement cycle for iPhones.
My take: Apple gave 5G its stamp of approval and the carriers ran with.