I've been lucky (for someone that buys phone direct) that I usually have a backup and a backup for the backup. Many don't have that luxury. I remember I had a Xperia Neo V cook the 3G portion of the radio and get denied for replacement under warranty (corrosion). All this leaves a terrible taste in my mouth.
To contrast, my Phillips 43" monitor had the screen go (backlight mura), it's a comparable $600 device. Know what they do? Advance replacement, I had a new panel in 2 days and could ship back the defective. Sony could do this, but they don't. Since they lack local repair centers you're just left without a working device.
Years back I had a friend with a 40gb ipod photo. It kept failing on him, Apple would replace. Eventually on the 3rd time they upgraded him to a 60gb ipod video, at no cost. He never experienced another failure. To date, he is still an Apple customer, still upgrades to their new devices every couple years. Sony doesn't even try in the US.
Out of ones I owned with the best aesthetics... the Nokia N9. No other phone matched OS to hardware as well. Mine died, else I'd probably still use it as a desk clock. It inspired the design of the entire later Lumia line.
In the US they were fucking garbage. I went through 3 replacements with a Xperia Z5 some years back that kept burning through the screen.
My Z3 had the glass on the back crack, and no repair shop could adequately glue the thing back onto the phone. So I converted it to stationary use. It eventually died after I used it as a AP wedged into a window, and water got inside.
Sony has one incompetent repair center in the US. Turnaround time averaged around 40 days, a time in which we'd need to contact Sony to keep moving the process forward. This was my experience with the Z series right on back to my old featurephone K-series in the mid-2000's
Good riddens, I won't miss them.