2G i hoʻokomoʻia i nā meaʻokoʻa maikaʻi i nā pūnaewele
Ma ka honua o cellphones, kahi e pili ana i 4G a me 5G , e hiki paha iāʻoe ke noʻonoʻo e pili ana i ka technology 2G, akā ināʻole,ʻaʻole pahaʻoe e "G" e like me 3G, 4G, a 5G paha .
2G: Ma ka hoʻomaka
Hōʻikeʻo 2G i kaʻenehanaʻenehanaʻenehana hou. Hoʻonohonoho hou nā'ōnaehana'ōnaehana 2G a me ka technology analog 1G, i hoʻomakaʻia i nā makahiki 1980. Uaʻike ka 2G pūnaewele i ko lākou mua kūʻai muaʻana i ka lā ma keʻano GSM . ʻO GSM, ka mea i hana i ka holoʻana o ka honua, he hōʻailona ia no ka'ōnaehana honua no nāʻike kelepona.
Ua hoʻohana muaʻia keʻenehana 2G ma keʻano GSM i kaʻoihana kalepa i ka makahiki 1991 ma Finland e Radiolinja, i kēia manawaʻo Elisa, kahi hui iʻikeʻia i nā makahiki 1990 e like me ka Helsinki Telephone Company.
ʻO kaʻenehana luahana keleponaʻeluaʻo ka manawa ia o ka māheleʻana i kahi manawa ( TDMA ) a iʻole ka māhele o ka māhele o ka māhele (CDMA).
Hoʻouka a hoʻouka i ka wikiwiki i ka technology 2G he 236 Kbps. 2G i mua o 2.5G , kahi i kākoʻoʻia i ka technology 2G i 3G .
Nā lawelawe o ka 2G Technology
I ka wā i hoʻokomoʻiaʻo 2G i nā kamele kani, ua mahaloʻia no nā kumu. ʻAʻole i lōʻihi ka lōʻihi o kona hōʻailona maʻamau i emi iho ka mana ma mua o nā hōʻailona ana. ʻO keʻenehana 2G hanaʻenehana a hiki i ka hoʻokomoʻana o SMS-ka'ōlelo kikokikona a me ka mahalo nui-me nā memo multimedia (MMS) a me nā memo kiʻi. Hāʻawiʻia ka hoʻopunipuni kikohohi 2G i kaʻike pilikino a me nā leo. ʻO ka mea i manaʻo waleʻia e loaʻa i kahi leka a iʻole ka'ōlelo paha e hiki ai ke heluhelu a heluhelu paha.
2GʻAʻohe pilikia
Loaʻa nā 2G phonephones i nā hōʻailonaʻilima kaha e hana, no laila,ʻaʻole lākou e hana i nā kauhale a iʻole nā wahi liʻiliʻi.