- Ukuguquka kwamafomethi angokoqobo kusukela ku-SIM ejwayelekile kuya ku-Nano SIM.
- Umehluko wezobuchwepheshe phakathi kwama-SIM abonakalayo njenge-eSIM kanye ne-iSIM.
- Ukuhambisana kanye nokusetshenziswa kwama-adapter ukusizakala ngamakhadi kumadivayisi ahlukene.
- Umehluko phakathi kwefomethi ebonakalayo yekhadi kanye nobuchwepheshe be-USIM.
Cishe uke wabhekana nalokhu: lapho uthenga ifoni entsha noma ushintsha izithwali, uzibuza ukuthi iyiphi ipulasitiki okudingeka uyifake. Nakuba kungase kubonakale sengathi kuyinto encane, ikhadi le-SIM liyingqikithi yokuxhumana kwakho , njengoba ngaphandle kwalo, ukwenza izingcingo noma ukuphequlula i-inthanethi ngaphandle kwe-Wi-Fi bekungeke kwenzeke.
Kusukela kwavela omakhalekhukhwini bokuqala, la makhadi ashintshe kakhulu, ehlala elwela ukwenza ama-miniaturization akhulule isikhala esengeziwe samabhethri namakhamera. Ngale ndlela, kuyinto evamile ukuthi umuntu ongajwayelene kakhulu nomuntu okhulumayo adideke kancane lapho ezama ukuthola ifomethi efanele ye-smartphone yakhe yamanje.
Amafomethi angokoqobo: kusukela kusayizi wekhadi lesikweletu kuya ku-chip engenalutho
Uma sibheka emuva ekuqaleni kwawo-90, sithola i-SIM (1FF) enosayizi ogcwele . Lawa makhadi ayeyizingcezu ezinkulu zepulasitiki, cishe enosayizi wekhadi lasebhange (85,6 x 53,98 mm). Namuhla, ayinsalela yomlando, abonakala kuphela kumafoni asendulo njenge-Motorola StarTAC, yize okwamanje esetshenziswa njengesibambi sangaphandle samakhadi amancane e-SIM.
Ngokuhamba kwesikhathi, imboni yanquma ukuthi ipulasitiki eningi kangaka yayiwukuchitha isikhala, ngakho-ke i- Mini SIM (2FF) yazalwa ngo-1996 . Njengoba yayinobukhulu obungu-25 x 15 mm, yaba yindinganiso iminyaka eminingi futhi yileyo esiyikhumbulayo kumafoni okuqala e-Nokia noma e-Alcatel. Nakuba ingasasetshenziswa kakhulu kumafoni eselula anamuhla, isatholakala kwamanye amadivayisi e-IoT noma kumafoni amadala kakhulu.
Ngo-2003, isidingo sokwenza amafoni abe mancane saholela ekudalweni kwe- Micro SIM (3FF) . Njengoba yayinobukhulu obungu-15 x 12 mm, yakhulula isikhala sangaphakathi esibalulekile. Yayithandwa kakhulu ngesikhathi sokushintshela kuma-smartphone okuqala, njengoba kubonakala kwezinye izinguqulo ze-iPhone, futhi yize isilahlekelwe amandla, isahambisana nama-adapter kumafoni amadala.
Manje sesifika enkosini yamanje: i- Nano SIM (4FF) . Yethulwe ngokusemthethweni cishe ngo-2012, iyikhadi le-SIM elincane kakhulu elitholakalayo, elinobukhulu obungu-12,3 x 8,8 mm kuphela. Empeleni, yonke ipulasitiki engadingekile isusiwe, kwasala i-chip yokugcina kuphela , okwenza ibe yindawo efanele amadivayisi agqokwayo kanye nesizukulwane sakamuva sama-smartphone.
Inguquko yedijithali: i-eSIM, i-iSIM kanye nokudideka nge-USIM
Akukhona nje kuphela ngepulasitiki kanye nezikhala. Eminyakeni yamuva nje, ama-SIM abonakalayo ayanda. Eyaziwa kakhulu yi- eSIM (i-SIM ehlanganisiwe) , okungeyona ikhadi olifaka ngesandla, kodwa i-chip ehlanganiswe kubhodi lomama lefoni. Isebenza ngephrofayili yedijithali, ngokuvamile ngokuskena ikhodi ye-QR, okukuvumela ukuthi uphathe imigqa eminingi kudivayisi eyodwa ngaphandle kwesidingo sokushintsha ikhadi le-SIM elingokoqobo.
Uma siqhubeka, sithola i -iSIM (i-SIM ehlanganiswe neprosesa) . Ngokungafani ne-eSIM, okuyi-chip ehlukile, i-iSIM ihlanganiswe ngqo neprosesa yedivayisi noma i-SoC. Lokhu kuyenza iqine kakhulu futhi isebenze kahle, okwenza kube inketho ekhethwayo yezinhlelo zokusebenza zezimboni, ukuxhumeka kwe-5G M2M , kanye ne-Internet of Things (IoT).
Kuvamile kakhulu ukudideka la magama ne -USIM , kodwa qaphela ukuthi akuyona usayizi obonakalayo. I-USIM iyintuthuko yezobuchwepheshe eyenzelwe amanethiwekhi e-3G, 4G, kanye ne-5G anikeza ukuphepha okukhulu kanye nokuqinisekiswa . Eqinisweni, iningi lama-Nano SIM esiwasebenzisayo namuhla angama-USIM ngokomthetho; siqhubeka nokuwabiza ngama-SIM ngenxa yomkhuba.
Ngingazi kanjani ukuthi iyiphi ikhadi elidingwa yidivayisi yami?
Uma ungaqiniseki ukuthi yiliphi ikhadi le-SIM okufanele ulithenge noma ulisebenzise, indlela elula ukuhlola ithreyi le-SIM lefoni. Uma isikhala sincane, cishe udinga i- Nano SIM , njengoba lokhu kuyisayizi ejwayelekile kumafoni angu-90% amanje. Uma ifoni yakho indala kakhulu futhi inebhethri elisusekayo, ingase isebenzise i-Mini noma i-Micro SIM.
Enye indlela esheshayo ukuya kuzilungiselelo zefoni yakho, esigabeni samaNethiwekhi eselula noma seDatha , lapho ungahlola khona ukuthi idivayisi yakho iyahambisana yini nokwengeza i-eSIM. Ungashayela futhi u-#06#; uma kuvela isihlonzi se-EID, kusho ukuthi i-smartphone yakho isekela ubuchwepheshe be-eSIM.
Ukuze kugwenywe izinkinga, izinkampani eziningi zenethiwekhi manje zithengisa amakhadi e-SIM amakhulu noma e-Trio . Lawa eza nezikhala ezisikiwe kusengaphambili ezikuvumela ukuthi unciphise ikhadi libe usayizi owudingayo (i-Mini, i-Micro, noma i-Nano), okuqinisekisa ukuthi i-chip ilingana kahle kungakhathaliseki ukuthi imodeli yedivayisi yakho injani. Uma ikhadi lakho le-SIM livinjiwe, khumbula ukuthi ungathola ikhodi yalo ye-PUK ukuze uthole ukufinyelela kabusha.
Ekugcineni, ukukhetha namuhla kuncike ekuguquguqukeni kwe-Nano SIM ebonakalayo kanye nokusebenziseka kalula kwedijithali kwe-eSIM, okushiya amafomethi amakhulu esikhathini esidlule noma ezingxenyekazi zekhompyutha ezikhethekile, kuyilapho ubuchwepheshe be-USIM kanye ne-iSIM buqhubeka nokwenza ngcono ukuphepha kanye nesikhala kumagajethi ethu.
