In most markets outside the US, the carrier contract model hasn&#x27;t been dominant. Some people choose to get a flagship for &quot;free&quot;, others choose a mid-tier phone in exchange for lower monthly fees, still others use budget phones on a prepaid tariff or a cheap monthly deal.<p>I think it&#x27;s notable that T-Mobile introduced diversity into the US cell service market - they&#x27;re the only truly global carrier operating in the US.