Entry period: July 21, 2021, at 12:00 PM Eastern Time (ET)  to August 12, 2021 at 11:59:59 PM ET. T-Mobile CNBC Small Business Sweepstakes Participate in the T-Mobile CNBC Small Business Sweepstakes, also known as the TFB Sweepstakes, at Tfbsweepstakes.com or…