Sprint:
Samsung flip phone thing (emergency phone) 2006-???
Don't know much about it, didn't use it much
LG Lotus ???-2011
Nice phone, but no data with parent's plan annoyed me. This lead me to get off my parent's plan and go tracfone.
Tracfone:
LG 500G 2011-2012
Nice crackberry clone with a vertical orientated screen and full keyboard. Served me well until I jumped on the android craze.
Unknown Samsung candybar phone with qwery slideout keyboard 2011?
It sucked, went back to 500G
PlatinumTel: (former sprint MVNO)
Samsung Galaxy Prevail 2012-hoildays 2012
Small screen, lack of internal storage, but had superuser and was better than my other phones all things considered. I managed to bail out before the carrier turned into something for T-Mobile.
Virgin Mobile:
Kyocera Rise holidays 2012-2013
$40 later, and I got this thing. Super thick, had good battery life, but died out on me and the physical keyboard on it was slower than using swiping keyboards. Decided to get something less awful.
HTC Evo 3D 2013-2014
A really nice phone without a doubt, especially with custom ROMS. Awful/dropping reception, getting hot, and lack of battery life made me give it up.
LG Volt (Optimus L90 w/CDMA radio) 2014-
Battery lasts forever, LTE is awesome, runs very well, but the LG skin sucks ass. Don't think I'll be giving this phone up as fast as the others