I went from Ericsson(GH688, T10) to Alcatel to Nokia to Siemens to iPhone 4s and have been using iPhones since then. At what point was the timeframe when you t

I went from Ericsson(GH688, T10) to Alcatel to Nokia to Siemens to iPhone 4s and have been using iPhones since then. At what point was the timeframe when you threw away your iPhone because was not possible to repair on a high street repair shop? I never had and I don't know anyone who ever had an issue with repairing their iPhone. Was it at the iPhone 3G years? My last repair was getting the battery and the front glass of my iPhone 6s that I still use as a secondary phone replaced. It cost me about 50$ if I recall correctly.