Apple Watch Series 3 is available with built-in cellular capabilities, allowing you to make phone calls, send and receive text messages, stream music, get directions with Apple Maps, use Siri, and more without a paired iPhone. The freedom comes at a cost, however, as Apple Watch Series 3 models with cellular are priced $70 higher than those with Wi-Fi and GPS only. Also, to access LTE, the watch must be added to your phone bill as an additional monthly charge. Here's a breakdown of how much participating carriers plan to charge. Some carriers have yet to announce their plans. Verizon Verizon said it allow customers to add an Apple Watch to an eligible plan for $10 per month. Verizon will reportedly waive its $30 activation fee, and is offering the first three months of service for free. The watch and iPhone share the same phone number via Verizon's NumberShare feature. AT&T AT&T has announced that customers can add an Apple Watch to an eligible plan for $10 per month. AT&T is offering a $25 activation fee credit, and a $30 service credit for adding an Apple Watch, within three bills. The watch and iPhone share the same phone number via AT&T's NumberSync feature. T-Mobile T-Mobile has announced that customers can add an Apple Watch to a plan for $10 per month with AutoPay. T-Mobile will reportedly waive its $25 new SIM card kit fee, and is offering the first three months of service for free. The watch and iPhone share the same phone number via T-Mobile's DIGITS feature. Sprint Sprint has announced that customers can add an Apple Watch to an