Comment Pre-paid providers sell 2.3 (Score 1) 629
While none of the post-paid providers sell 2.3 any more, plenty of pre-paid providers still do. Boost, Straight Talk, TracFone, Page Plus, etc. If you are a pre-paid operator, many of your customers don't have good enough credit for payment plan on a nice phone, don't have enough money to buy a nice phone out-right, and said customers aren't forced to stay with your company long enough for you to risk much of a subsidy in the monthly fees. That leaves you being forced to sell the cheapest phones you can for the customers that want them.
We are talking $30-40, out the door, here... If you are spending that little on a phone, you have to trim cost anywhere you can, which means the thing won't even run stuff much more recent, even if the carrier wanted to put forth the effort to do so. (Which, given their generally low margins, they won't even think of doing.)
Yes, for not much more money, you can get a MUCH nicer phone ($65 will get you a Moto G on Boost, for instance), but at the very bottom end, every dollar counts when specing out phones.
(Personally, I use a Boost Moto G flashed to PagePlus/VzW... an excellent example as to why the phones can't be subsidized much. Sprint/Boost totally has taken it in the shorts here, as outside of the phone itself (which is still subsidized somewhat), they've haven't gotten a dime from me, as they inexplicably didn't request Moto lock the bootloader, making it fairly trivial to convert it over to working with Verizon.)