My old $250 Motorola G9 Power phone lasted almost 4 years with only very minor scratches. Obviously in that period I have dropped it a few times, especially getting out of the car, where the phone sometimes work itself out of my pant pocket while I drive. But no problem, despite cheap plastic back and Panda glass front.
Then I bought my $800 glass back Xiaomi 13T Pro in January, and I loved the phone for the camera and good specs. But alas after only 4 months, and single drop of just 30 cm while sitting on the porch, the glass back immediately cracked! The back now looks like an ugly mess, and the high water resistance is very likely gone too.
For sure the last time I buy a phone with a glass back!!!
I wonder why it’s so popular, and I curse the media for reviewing the Samsung Galaxy S2 as “feeling a bit cheap”, because the back was synthetic, and drop tests showed it was 10 times as durable as the iPhone with its glass back.
Samsung did it right in the beginning, glass backs are a curse.
PS: I don’t use condoms for my phones, if they need that for daily use, it’s an obvious design flaw!!!
Glass backs are popular because it makes assembly easier, because if the front and back are made from the same material, then they would have the same thermal expansion coefficient, which means that you can get a less variable fit between the front and the back.
It is for the benefit of the manufacturer and not the customer.
Oh, I thought it was so that the phone would feel more premium!
That’s just marketing, since everyone put their phone in a big case immediately anyway.
Easier than plastic?
Waterproofing requirements makes everything harder, because there can’t be any gaps between the screen and the back.
It’s also partly because phones now require 60,000 antennae and radio waves don’t go through metal. Wireless charging, NFC, wifi (x2), bluetooth, cellular (x4), UWB… There’s some ability to reuse the antennas via TDM and other tricks but they just “need” so many these days. Also also, plastic is kinda evil from a pollution standpoint, although one could also argue that it could just be recycled with the rest of the phone.