I haven't left the smartphone behind, but I did happily downgrade recently. I went from an iPhone 3G to a Motorola Droid to an LG Optimus V running on Virgin M

I haven't left the smartphone behind, but I did happily downgrade recently. I went from an iPhone 3G to a Motorola Droid to an LG Optimus V running on Virgin Mobile. Though the Optimus V is in virtually all ways a step down from the Motorola Droid, $150 for phone + $25 month for unlimited data & text and 300 talk minutes is such an enormously better value and the Optimus V still does everything I actually used my Droid for just fine. YMMV if you care about running the latest 3D games (or Flash, since the Optimus V has no Flash support due to being ARMv6)), but I've been totally happy with my "downgrade".