T-Mobile's T-Mix: Some Picks Lock In for a Quarter or Longer

T-Mobile is launching T-Mix plans, which bundle wireless service with outside-company subscriptions it calls "Picks." According to T-Mobile, some Picks can be switched at any time, while others stay in place for a quarter (three months) or longer. An annual selection period lets users reset all perks. Standard starts at $55 per month with AutoPay (automatic bill payment).