Galaxy S9 US pre-orders focus on trade-in deals

There are other promos, as you might expect. Verizon is offering $100 off a Gear S3 smartwatch if you activate it on a 2-year plan, and promises a $150 prepaid card if you’re switching networks. Xfinity Mobile, in turn, is offering a $250 prepaid card to anyone who buys a Samsung phone and opens a …