https://www.theverge.com/2017/9/12/16297566/apple-iphone-x-8-plus-trade-in-t-mobile-att-verizon-sprint >T-Mobile was well prepared for today’s iPhone reveal, as the carrier has already publicly announced trade-in deals for Apple’s latest smartphone refresh. The carrier says it’s giving $300 to any customer who trades in an iPhone 6 or newer in good condition for an iPhone 8, iPhone 8 Plus, or the iPhone X. For those interested in the latter, extra-costly device — which costs $999 for a 64GB model, or $1,150 for a 256GB model — a $300 credit should help ease the pain a little bit. >T-Mobile also says Apple is offering three months of free cellular service for the new LTE-equipped Apple Watch Series 3, which piggybacks off your plan by using the same phone number. After the promotional period for the Apple Watch ends, T-Mobile says unlimited talk, text, and data for the Series 3 will cost an extra $10 a month. Adding a Watch to your plan is done through T-Mobile’s Digits service, which is the same thing that lets your phone number migrate to other internet-connected devices, like watches or a work phone, or be shared with friends and family members.