The attitude that even cheap phones are throwaways is troubling to me. Not just because throwing away $200-300 seems reasonable to people here that average people can afford to do this regularly, but mostly because every phone cheap or not, takes resources to produce, many of which are non renewable, resources to ship and distribute and sure they're recyclable, but I'd be willing to be not a lot of people put the effort in to actually recycle them.
Continuing to produce new phone after new phone with only slight improvements between each new model with the expectation that people will just buy a new one rather than upgrade parts or repair old ones is just completely and utterly wasteful from an environmental stand point.