T-Mobile will be the exclusive carrier partner for the OnePlus 7 Pro in the US. Un-carrier customers will be able to buy one before anyone else in the world, just days after the official unveiling on May 14. As soon as May 17, Pro units will be available at T-Mobile stores and the carrier's website. If you're anxious to try before you buy, the T-Mobile Times Square Signature Store will have units available for handling immediately after the unveiling event is over. The following day other Signature Stores will have it too - the ones in Chicago, Las Vegas, Miami, San Francisco and Santa...