Infograph shows recent rush to trade in older models before the Samsung Galaxy S4 launch

An infograph from CompareMyMobile shows the impact that the Samsung Galaxy S4 is having in the recycled handset market. Requests for valuations on older Samsung models has risen 129% since the unveiling of the newer flagship device.
This is usually how Apple products respond to a new iPhone model, confirming that Samsung has reached "iPhone" status with its Galaxy S line.

The volume of Samsung branded trade ins has risen 29% prior to the release of the Samsung Galaxy S4. On March 14th, Samsung branded trade ins accounted for 12.5% of trade in volume. On April 24th, Samsung related trades made up 17.2% of the market. Meanwhile, Apple's share of the trade in market has declined from 50% to 44% over the last 50 days. 

The chart showing prices for the older phones in the Samsung Galaxy S line are declining as more phones get pushed onto the market to help defray the cost of the new Samsung Galaxy S4. The Samsung Galaxy Shas recently dropped 10% to less than $75. The Samsung Galaxy S II has dropped 23% to around $100, while the Samsung Galaxy S III has dropped 19%. The two phablets have also dropped in price with theSamsung GALAXY Note declining 7% and the Samsung GALAXY Note II declining 3% in value.