Hom thev naus laus zis uas tus neeg nqa khoom siv wireless siv (GSM, EDGE, CDMA, lossis TDMA) tseem ceeb thaum koj yuav lossis muag lub xov tooj ntawm tes. Thaum xaiv txoj kev npaj kev pabcuam xov tooj ntawm tes ntawm koj tus neeg nqa khoom xaiv yog qhov tseem ceeb, yog li xaiv tus cab kuj yog thawj qhov chaw. Peb tau tshuaj xyuas cov thev naus laus zis sib txawv ntawm cov neeg siv wireless siv los pab koj qhia qhov txawv.
Tsis yog tag nrho cov txheej txheem hauv kab lus no tseem siv.
Kev Tshawb Nrhiav Txhua Yam
| GSM | EDGE | CDMA | TDMA |
|---|---|---|---|
| Cov ntaub ntawv khaws cia hauv SIM daim npav. | Based ntawm GSM. | Tau siv daim npav SIM. | 2G system. |
| Hloov xov tooj txhais tau tias tsuas yog hloov daim npav xwb. | 3 zaug nrawm dua GSM. | Tus muab khoom khaws ntaub ntawv. | Predates GSM. |
| siv dav, tshwj xeeb tshaj yog thoob ntiaj teb. | Siv los ntawm AT&T thiab T-Mobile. | Hloov tsis tau xov tooj yam tsis muaj kev pom zoo los ntawm tus kws kho mob. | Tsis siv lawm. |
| Hloov SIM daim npav siv xov tooj hauv lwm lub tebchaws yam tsis muaj roaming. | Sprint, Virgin Mobile, thiab Verizon Wireless. |
Rau xyoo, ob lub xov tooj tseem ceeb thev naus laus zis, CDMA thiab GSM, yog cov neeg sib tw tsis sib xws. Qhov kev tsis sib haum xeeb no yog vim li cas ntau lub xov tooj AT&T tsis ua haujlwm nrog Verizon cov kev pabcuam thiab rov ua dua.
EDGE yog qhov nrawm dua ntawm GSM, thiab TDMA tau siv tau zoo. Yog li, TDMA tsis yog qhov kev xaiv siv tau ntxiv lawm. Nws zoo los rau GSM thiab CDMA, nrog GSM ntaus tawm CDMA rau cov neeg siv-thiab cov neeg siv khoom nyiam.
Speed: EDGE muaj qhov zoo
| GSM | EDGE | CDMA | TDMA |
|---|---|---|---|
| 3G network. | 3 zaug nrawm dua GSM. | 3G network. | 2G system. |
| Max ceev txog li 7.2 Mbps. | Tsuas yog kwv yees li 1 Mbps. | Tsis muaj lawm. | |
| Nruab nrab ceev ntawm 2.11 Mbps. |
Ob leeg GSM thiab CDMA yog 3G tes hauj lwm, tab sis ntawm ob, GSM yog qhov kev xaiv sai dua. CDMA qhia tau hais tias qhov kev rub tawm tau zoo li ntawm 1 megabit ib ob, thaum GSM thov ceev txog li 7 Mbps. Kev ntsuam xyuas tau muab qhov ua tau zoo ntawm GSM ze rau 2.11 Mbps, uas yog ob zaug ceev li CDMA.
EDGE yog peb zaug sai dua GSM thiab ua raws li tus qauv ntawd. Nws yog tsim los kom haum rau streaming media ntawm mobile pab kiag li lawm. AT&T thiab T-Mobile muaj EDGE networks.
User-Friendliness: GSM yog qhov yooj yim tshaj rau Hloov
| GSM | EDGE | CDMA | TDMA |
|---|---|---|---|
| Siv SIM phaib los khaws cov neeg siv cov ntaub ntawv. | Ua haujlwm zoo ib yam li GSM. | Tsis siv daim npav SIM. | Unavailable. |
| Kev hloov mus rau lub xov tooj tshiab txhais tau tias tsuas yog hloov daim npav SIM xwb. | Tus neeg nqa khoom yuav tsum tso lossis hloov cov ntaub ntawv tus neeg siv mus rau lub xov tooj tshiab. | ||
| Zoo rau kev siv thoob ntiaj teb. |
GSM cov chaw muab kev pabcuam muab cov ntaub ntawv rau cov neeg siv khoom ntawm daim npav SIM tshem tau. Txoj kev no ua rau nws yooj yim los hloov cov xov tooj. Tsuas yog muab daim npav SIM tawm ntawm lub xov tooj qub thiab ntxig rau hauv lub tshiab. GSM technology yog dav nyob rau hauv cov teb chaws Europe. Ua ke nrog lub xov tooj nrog SIM tshem tau, thiab koj muaj lub xov tooj koj tuaj yeem siv rau kev mus ntsib txawv teb chaws nrog SIM hloov.
CDMA xov tooj yuav lossis tsis muaj SIM daim npav. Cov ntaub ntawv siv tau muab khaws cia nrog tus neeg muab kev pabcuam, uas yuav tsum tau tso cai rau hloov xov tooj. CDMA xov tooj yuav tsum tau programmed nrog txhua tus cab kuj uas koj siv. Thaum koj hloov cov cab kuj, lub xov tooj yuav tsum tau reprogrammed rau tus cab kuj, txawm tias nws yog ib lub xov tooj xauv.
Tus Muab: Nrhiav Koj Nyiam
| GSM | EDGE | CDMA | TDMA |
|---|---|---|---|
| Cov neeg muab kev pabcuam suav nrog T-Mobile thiab AT&T. | Same as GSM. | Cov neeg muab kev pabcuam suav nrog Sprint, Virgin Mobile, thiab Verizon Wireless. | Incorporated rau hauv GSM. |
| Ntau dua thoob ntiaj teb. |
GSM yog lub ntiaj teb kev siv xov tooj ntawm tes ntau tshaj plaws, nrov hauv Asmeskas thiab thoob ntiaj teb. Cov neeg nqa xov tooj ntawm tes T-Mobile thiab AT&T, nrog rau ntau lub xov tooj me me, siv GSM rau lawv cov tes hauj lwm.
GSM yog lub xov tooj ntawm tes nrov tshaj plaws hauv Asmeskas, thiab nws loj dua hauv lwm lub tebchaws. Tuam Tshoj, Russia, thiab Is Nrias teb muaj ntau tus neeg siv xov tooj GSM ntau dua li Teb Chaws Asmeskas Nws yog ib qho zoo rau GSM tes hauj lwm kom muaj kev roaming nrog txawv teb chaws, uas txhais tau hais tias GSM xov tooj yog cov kev xaiv zoo rau cov neeg mus txawv teb chaws.
EDGE yog qhov hloov pauv ntawm GSM, yog li nws muaj qhov muaj tib yam li tus qauv qub.
CDMA sib tw nrog GSM. Sprint, Virgin Mobile, thiab Verizon Wireless siv CDMA cov txheej txheem thev naus laus zis hauv Asmeskas, ib yam li lwm cov chaw muab kev pabcuam me me.
Txij li xyoo 2015, txhua tus neeg nqa khoom hauv Asmeskas yuav tsum tau xauv cov neeg siv xov tooj tom qab lawv ua tiav lawv cov ntawv cog lus. Txawm hais tias koj qhib koj lub xov tooj los yog yuav lub xov tooj xauv tshiab, nws yog GSM lossis CDMA xov tooj, thiab koj tsuas tuaj yeem siv nws nrog cov chaw muab kev pabcuam sib xws. Txawm li cas los xij, muaj lub xov tooj xauv tau muab rau koj ntau yam ntawm cov chaw muab kev pabcuam xaiv los ntawm. Koj tsis txwv rau ib leeg xwb.
TDMA, uas tau tshaj tawm cov txheej txheem thev naus laus zis GSM ntau dua, tau muab tso rau hauv GSM. TDMA, uas yog 2G system, tsis siv los ntawm cov tuam txhab loj hauv Teb Chaws Asmeskas cov xov tooj ntawm tes.
Kev Txiav Txim Kawg
Qhov kev pabcuam xov tooj zoo tsis muaj dab tsi cuam tshuam nrog cov thev naus laus zis uas tus kws kho mob siv. Kev ua tau zoo nyob ntawm lub network thiab seb tus neeg muab khoom tsim nws li cas. Muaj ob qho tib si zoo thiab tsis zoo-kev sib txuas nrog GSM thiab CDMA thev naus laus zis. Koj muaj peev xwm khiav mus rau qhov kev txhawj xeeb zoo nrog cov tes hauj lwm me dua li cov loj.
FAQ
Koj puas tuaj yeem siv lub xov tooj GSM ntawm Verizon lub network?
Feem ntau cov xov tooj niaj hnub no tau tsim los ua haujlwm ntawm GSM thiab CDMA tes hauj lwm, uas txhais tau tias lawv tau sib xws nrog txhua lub xov tooj ntawm tes loj. Tab sis, koj tsuas tuaj yeem hloov cov neeg nqa khoom yog tias lub xov tooj qhib. Koj tuaj yeem tshawb xyuas yog tias koj tus qauv xov tooj tshwj xeeb yog sib xws nrog Verizon lub network siv nws IMEI.
Puas yog Verizon tseem siv CDMA?
Verizon npaj yuav tshem tawm nws lub 3G CDMA network thaum Lub Kaum Ob Hlis 31, 2022. Ua ntej txog hnub kaw, 3G cov neeg siv khoom yuav muaj kev cuam tshuam lossis kev pabcuam tsis zoo, thiab Verizon hais tias nws cov neeg siv khoom txhawb nqa tuaj yeem muab "tseem ceeb heev" kev daws teeb meem rau cov khoom qub.
Koj tuaj yeem qhia tau li cas yog lub xov tooj yog GSM lossis CDMA?
On Android, mus rau Settings > About Phone. Koj lub xov tooj siv CDMA yog tias koj pom tus lej MEID lossis ESN, thiab nws siv GSM yog tias koj pom tus lej IMEI. Ntawm iOS no, mus rau Settings > General > About txhawm rau nrhiav cov ntaub ntawv no.
