The document, which looks like a store training sheet and first reported by Engadget, confirms that the S4 will be launched through at least three major US carriers – AT&T, Verizon and T-Mobile. If the document is authentic AT&T will start offering the Galaxy S4 from April 26 followed by T-Mobile which will release it from May 1 and finally Verizon offering it from May 30.

There has been no official confirmation from Samsung regarding the S4 launch dates. The training sheet, which surfaced on April 14, may not be completely ignored as the official pre-orders begin from April 15 – just a day after the document was leaked. Considering that Staples might be getting its staff ready for one of the most anticipated launches well ahead of the official launch by carriers the document may very well be the official training sheet.

Check out the leaked document below: