I don't know about the worst, but they're certainly not providing any for my phone (SCH-I927 Captivate Glide, which I bought because it has a physical qwerty keyboard).
No OTA updates are available either, because I'm on an AT&T-hosted MVNO.
With a refurbished grey-market phone and an MVNO, though, I wasn't expecting any updates from anyone. On the other hand, the phone was only around $100 and came unlocked and rooted, and I pay less than half of what my wife pays AT&T for a similar level of service (aside from off-network roaming - but my SIM card is replaceable).
On the whole, I'm willing to forego updates in exchange for a device with the features I want (physical keyboard, SD card slot, removable SIM, removable battery), which I have full control over, at a much lower price and no contract. But then that's why I won't pay a lot of money for a phone in the first place - flagship features be damned.
Biting the hand that feeds IT
