I'm tempted by the OnePlus Five, but I may wait a few months to see if there are any issues before I purchase one. The customer support at OnePlus is notoriously poor, so I'm keen to wait for the second batch to arrive off the factory floor.
OnePlus provides impressive specs per dollar, and their phones are really nice 95% of the time. The last 5% is where they lost me.
Probably the classic infant mortality curve, just as my OnePlus 1 is going strong, a lot of my friends' still have their older phones, because they still work flawlessly.
I only found software rates https://www.blancco.com/resources/rs-state-of-mobile-device-... though I know nothing of the veracity of this ... study.
https://www.statista.com/statistics/218777/failure-rates-for... ..
Ah, finally something a bit more relevant: https://www.squaretrade.com/cell-phone-comparison-study-nov-... 2% for iPhone 4.
The squaretrade thing is more interesting, the raw data for the statista link is https://www.squaretrade.com/htm/pdf/iPhone_failure_rates_6_2.... I'd be interested in an update on that, phone materials have changed a lot in the last six or seven years. I would hope that things have improved overall but it would be nice to get confirmation on that.