The Z3C wasn't a bad device. The Z5C is awful, primarily due to a processor that overheats at the drop or a hat, causing the entire phone to be unacceptably slow. (neither are even all that small, but by 2017 Android standards they're tiny)
More crucially, their support is awful - I had to send both a Z3C and Z5C in for repair shortly after receiving them, and in both instances they kept onto the phones for more than a month because they didn't have available parts. And with the Z5C refused to admit that it overheats. On that basis alone I can't justify buying another Sony device.
More crucially, their support is awful - I had to send both a Z3C and Z5C in for repair shortly after receiving them, and in both instances they kept onto the phones for more than a month because they didn't have available parts. And with the Z5C refused to admit that it overheats. On that basis alone I can't justify buying another Sony device.