: If you have the original box and accessories in pristine condition, you can target buyers on eBay or Swappa who value the "unboxing" experience.

This is your most lucrative market. Collectors look for specific "grails" to complete their Apple history sets.

Several platforms still offer cash for the 3GS, primarily to refurbish them for emerging markets or for corporate displays.

: A factory-sealed 3GS can fetch hundreds, or even thousands, of dollars at specialized auctions.

Selling a vintage device like the iPhone 3GS is more about finding the right than hitting a mass market. Because it no longer supports 4G/LTE or modern apps, its value has shifted from a functional phone to a collector's item or a source for parts . 1. Collectors & Tech Enthusiasts