Zonke iifowuni zikwazi ukufikelela kwiWebhu, kodwa akubona bonke abakwenzayo kwijubane elifanayo. Ezinye ii-fowuni ziyakwazi ukukhupha kwi-site ukuya kwisiza, ukukhuphela iifayile ngokukhawuleza, ngelixa ezinye zibonakala zinikela ngesivinini ngokukhawuleza kunokuba uxhumano lwangaphambili lwe-dial-up.
I-iPhone ye-Apple, umzekelo, ayikwazi ukufikelela kwi-network ye-AT & T ye- HSDPA ; I-Apple ithi ithetha ukuba ingabandakanyeki inkxaso ye-HSDPA kuba i-chipset eyimfuneko yayiza kubakho amandla amakhulu, ukunciphisa ubomi bhetri.
Ukuba inkonzo yedatha yokukhawuleza ibalulekile kuwe, qiniseka ukuba ifowuni onomdla kuyo isekela inethiwekhi ye-3G. Yaye ukhumbule ukubuza ukuba unako ukuzama ifowuni kunye nenkonzo ye-3G ngaphambi kokuya kwikontrakthi yexesha elide, okanye ukuyibuyisela xa ungenakuvuyela ukusebenza kwayo. Khumbula: Imilinganiselo eyona nto ingahluka.
Ungaqiniseka njani ukuba ifowuni iya kunika i-Web browsing speed? Enye yezona zinto zinkulu kunxibelelwano lweedatha oluxhasayo ngefowuni-kunye nenethwekhi eyenziwa ngumthuthi wakho weselula. I-3G, okanye isizukulwana sesithathu, inethiwekhi yedatha iya kunika isantya esheshayo. Azikho zonke iinqununu ze-3G zenziwe zilinganayo, nangona kunjalo. Isithinteli ngasinye seselula sinikeza inethiwekhi yaso (okanye amanethiwekhi), kwaye ezininzi azifumaneki kuzo zonke iindawo.
Nantsi ingqungquthela yale nto idla ngokukrakra iteknoloji.
Hayizo zonke iifowuni ezilinganayo:
Umphathiswa wakho unokunikezela inethiwekhi yedatha yokukhawuleza, kodwa akuzona zonke iifowuni zazo ezinokufikelela ezi nkonzo ezikhawulezayo. Iifowuni ezithile kuphela-ezixhotyiswe nge-chipset efanelekileyo ngaphakathi-zingenza njalo.
Intanethi ye-3G yintanethi ye-broadband ye-intanethi, inikezela ngesivinini sedatha ubuncinane bei-144 kilobits ngesibini (Kbps). Ukuthelekisa, uxhulumaniso lwe-Intanethi kwi-khomputha lunikela ngokukhawuleza malunga no-56 Kbps. Ukuba uhlale uhlale ulinde iphepha lewebhu ukukhuphela kwi-connection-up connection, uyazi ukuba liphuza kangakanani.
Iinqununu ze-3G zinokunika isantya se-3.1 megabits ngesibini (Mbps) okanye ngaphezulu; oku kuhambisane nezantya ezinikezwa ngeemodemu zekhebula.
Ukusetyenziswa kwansuku zonke, nangona kunjalo, isantya soqobo senethiwekhi ye-3G iya kuhluka. Izinto ezinjengegunya lesiganeko, indawo yakho, kunye nenethiwekhi yonxibelelwano yonke iya kudlala.
I-T-Mobile Ihlaya emva:
Okwangoku, i-T-Mobile isekela kuphela inethiwekhi ye-2.5G EDGE. Umphathiswa uceba ukuqalisa inethiwekhi ye-3G, ngenkxaso ye-HSDPA isevisi ephakamileyo, kamva ngeli hlotyana, nangona kunjalo. Hla umamele.
Inkonzo ye-High Speed Speed ye-AT & T:
I-AT & T inikezela ngamanethiwekhi amathathu edatha ephakamileyo "i-speed": EDGE, UMTS, kunye ne-HSDPA.
Inethiwekhi ye-EDGE, inethiwekhi yedata exhaswa yi-iPhone yesizukulwana sokuqala, ayikho inethiwekhi ye-3G yangempela. Ngokuqhelekileyo kubhekiselwa kunethiwekhi ye-2.5G, ngezantya ezingaphelelanga ii-200 Kbps.
Inkonzo ye-UMTS inikela ngesivinini se-200 Kbps ukuya kwii-400 Kbps, kunye nokukwazi ukuphuma ngaphandle malunga ne-2 Mbps. Yona yenkonzo ye-3G eyiyo ngesivinini esedlula i-network ye-EDGE.
I-Sprint elandelayo Nextel neVerizon engenamatshini:
I-Sprint Nextel kunye ne-Verizon Inqwelomoya engenazintambo zesekela inethiwekhi ye-EV-DO. I-EV-DO inokufutshane kwi-Evolution-Data ephuculiweyo kwaye ngamanye amaxesha igqityiweyo njenge-EvDO okanye i-EVDO. I-EV-DO ilinganiswe ukunikela ngesivinini ukusuka kwii-400 Kbps ukuya ku-700 Kbps; njengamanye amanethiwekhi e-3G, isantya esivelayo siyahluka.
Intlukwano phakathi kweenkonzo ze-EV-DO ezinikezelwa yi-Sprint Nextel kwaye ezinikezwa yi-Verizon Wireless zincinci. Izantya ziyafana, kodwa ngamnye umphathiswa unikezela ngokukhawuleza kwiindawo ezahlukeneyo.
Jonga Imephu yokuPhupha yeSprint kunye ne-Verizon yemephu yokufumana ulwazi olungakumbi malunga nokufumaneka kwenethiwekhi.
I-HSDPA ihamba ngokukhawuleza kwezixhobo zokukhawuleza. Kukhawuleza kangangokuba ngokuqhelekileyo kuthiwa inethiwekhi ye-3.5G. I-AT & T ithi inethwekhi inokuthi ishaye isivinini se-3.6 Mbps ukuya kwi-14.4 Mbps. Imigangatho yehlabathi eliqhelekileyo ngokuqhelekileyo iyancipha kuneleyo, kodwa i-HSDPA isisetyenziselwano esikhulu. I-AT & T ithetha kwakhona ukuba inethwekhi yayo iya kuhamba ngesivinini se-20 Mbps ngo-2009.
Ukufumana ulwazi oluthe xaxa malunga nokufumaneka kwenethiwekhi, khangela i-AT & T yemephu yemephu.