ðɪ ɐvˌeɪləbˈɪlᵻɾi ʌv səbskɹˈaɪbɚɹ aɪdˈɛntᵻɾi mˈɑːdʒuːlz ɐlˈaʊz jˈuːzɚz tə swˈɪtʃ nˈɛtwɜːks ænd hˈændsɛts ɐtwˈɪl, ɐsˈaɪd fɹʌm ɐ sˈʌbsɪdi lˈɑːk.
The availability of Subscriber Identity Modules allows users to switch networks and handsets at will, aside from a subsidy lock.