Seems Sprint might be soon be trying a little harder to hold onto their customers according to this leaked screenshot from an authorized dealer. Starting September 9th, Sprint will be increasing their Early Termination Fees from the affordable $200 up to $350 according SprintFeed. Sprint has always been pretty great when it comes to their ETF’s with a fees that actually shrink the closer you get to the end of your term. Although the leak comes from an authorized dealer, what goes for dealers usually goes for corporate stores as well. If you’re already on a contract you wont have to worry about this future increase but if you were thinking about jumping onto ‘ol Yeller, you may want to sign that contract before September 9th.