{"id":50778,"date":"2026-09-01T12:10:18","date_gmt":"2026-09-01T05:10:18","guid":{"rendered":"https:\/\/saigonbiz.com\/vn\/?p=50778"},"modified":"2026-09-01T12:10:18","modified_gmt":"2026-09-01T05:10:18","slug":"tat-song-2g-co-the-anh-huong-den-ca-dien-thoai-4g","status":"publish","type":"post","link":"https:\/\/saigonbiz.com\/vn\/tat-song-2g-co-the-anh-huong-den-ca-dien-thoai-4g\/","title":{"rendered":"T\u1eaft s\u00f3ng 2G c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 \u0111i\u1ec7n tho\u1ea1i 4G"},"content":{"rendered":"

\u0110\u00f3 l\u00e0 chia s\u1ebb c\u1ee7a nh\u00e0 m\u1ea1ng Viettel cho l\u1ed9 tr\u00ecnh t\u1eaft s\u00f3ng 2G ho\u00e0n to\u00e0n t\u1eeb 15\/9 t\u1edbi. Theo \u0111\u00f3, vi\u1ec7c t\u1eaft s\u00f3ng 2G kh\u00f4ng ch\u1ec9 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn nh\u1eefng ng\u01b0\u1eddi \u0111ang s\u1eed d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i 2G v\u00ec m\u1ed9t s\u1ed1 smartphone 4G v\u1eabn c\u00f3 th\u1ec3 b\u1ecb gi\u00e1n \u0111o\u1ea1n kh\u1ea3 n\u0103ng nghe g\u1ecdi n\u1ebfu ch\u01b0a \u0111\u00e1p \u1ee9ng \u0111i\u1ec1u ki\u1ec7n tho\u1ea1i tr\u00ean m\u1ea1ng 4G.<\/p>\n

Theo l\u1ed9 tr\u00ecnh, t\u1eeb ng\u00e0y 15\/9\/2026, m\u1ea1ng 2G s\u1ebd d\u1eebng ph\u00e1t s\u00f3ng tr\u00ean ph\u1ea1m vi to\u00e0n qu\u1ed1c, ngo\u1ea1i tr\u1eeb m\u1ed9t s\u1ed1 khu v\u1ef1c \u0111\u1eb7c th\u00f9. Tuy nhi\u00ean, qu\u00e1 tr\u00ecnh t\u1eaft 2G th\u1ef1c t\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 m\u1ea1ng tri\u1ec3n khai t\u1eebng b\u01b0\u1edbc theo khu v\u1ef1c thay v\u00ec ch\u1edd \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m n\u00e0y m\u1edbi th\u1ef1c hi\u1ec7n \u0111\u1ed3ng lo\u1ea1t.<\/p>\n

T\u1ea1i Viettel, m\u1ed9t s\u1ed1 tr\u1ea1m 2G \u1edf nh\u1eefng khu v\u1ef1c \u0111\u00e1p \u1ee9ng \u0111i\u1ec1u ki\u1ec7n chuy\u1ec3n \u0111\u1ed5i \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1eaft d\u1ea7n. V\u00ec v\u1eady, m\u1ed9t s\u1ed1 kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn d\u1ecbch v\u1ee5 tho\u1ea1i s\u1edbm h\u01a1n m\u1ed1c 15\/9 n\u1ebfu thi\u1ebft b\u1ecb ho\u1eb7c thu\u00ea bao ch\u01b0a s\u1eb5n s\u00e0ng cho vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i.<\/p>\n

Tr\u00ean th\u1ef1c t\u1ebf, m\u1ed9t s\u1ed1 smartphone d\u00f9 hi\u1ec3n th\u1ecb 4G v\u00e0 truy c\u1eadp Internet b\u00ecnh th\u01b0\u1eddng nh\u01b0ng khi th\u1ef1c hi\u1ec7n ho\u1eb7c nh\u1eadn cu\u1ed9c g\u1ecdi v\u1eabn chuy\u1ec3n xu\u1ed1ng m\u1ea1ng 2G \u0111\u1ec3 duy tr\u00ec k\u1ebft n\u1ed1i tho\u1ea1i. Qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra t\u1ef1 \u0111\u1ed9ng n\u00ean ph\u1ea7n l\u1edbn ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng nh\u1eadn bi\u1ebft.<\/p>\n

Khi s\u00f3ng 2G kh\u00f4ng c\u00f2n, nh\u1eefng \u0111i\u1ec7n tho\u1ea1i n\u00e0y c\u1ea7n th\u1ef1c hi\u1ec7n cu\u1ed9c g\u1ecdi tr\u1ef1c ti\u1ebfp tr\u00ean m\u1ea1ng 4G th\u00f4ng qua c\u00f4ng ngh\u1ec7 VoLTE (Voice over LTE). N\u1ebfu thi\u1ebft b\u1ecb kh\u00f4ng h\u1ed7 tr\u1ee3, ch\u01b0a b\u1eadt VoLTE ho\u1eb7c thu\u00ea bao ch\u01b0a \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t d\u1ecbch v\u1ee5, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 v\u1eabn truy c\u1eadp Internet b\u1eb1ng 4G nh\u01b0ng g\u1eb7p gi\u00e1n \u0111o\u1ea1n khi th\u1ef1c hi\u1ec7n ho\u1eb7c nh\u1eadn cu\u1ed9c g\u1ecdi.<\/p>\n

N\u00f3i c\u00e1ch kh\u00e1c, \u0111i\u1ec7n tho\u1ea1i c\u00f3 4G ch\u01b0a \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c ch\u1eafc ch\u1eafn c\u00f3 th\u1ec3 nghe g\u1ecdi b\u00ecnh th\u01b0\u1eddng sau khi 2G \u0111\u01b0\u1ee3c t\u1eaft.<\/p>\n

\"\"<\/p>\n

Nh\u00f3m ng\u01b0\u1eddi d\u00f9ng c\u1ea7n l\u01b0u \u00fd h\u01a1n l\u00e0 nh\u1eefng ng\u01b0\u1eddi \u0111ang s\u1eed d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i \u0111\u1eddi c\u0169, m\u00e1y x\u00e1ch tay ho\u1eb7c thi\u1ebft b\u1ecb kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i ch\u00ednh th\u1ee9c t\u1ea1i Vi\u1ec7t Nam. V\u1edbi c\u00e1c thi\u1ebft b\u1ecb n\u00e0y, ng\u01b0\u1eddi d\u00f9ng n\u00ean ch\u1ee7 \u0111\u1ed9ng ki\u1ec3m tra kh\u1ea3 n\u0103ng g\u1ecdi tr\u00ean m\u1ea1ng 4G tr\u01b0\u1edbc khi s\u00f3ng 2G \u0111\u01b0\u1ee3c t\u1eaft.<\/p>\n

Ng\u01b0\u1eddi d\u00f9ng smartphone 4G kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i \u0111\u1ed5i m\u00e1y. Tr\u01b0\u1edbc ti\u00ean, c\u1ea7n ki\u1ec3m tra \u0111i\u1ec7n tho\u1ea1i c\u00f3 h\u1ed7 tr\u1ee3 VoLTE v\u00e0 t\u00ednh n\u0103ng n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t hay ch\u01b0a.<\/p>\n

Tr\u00ean nhi\u1ec1u thi\u1ebft b\u1ecb, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 v\u00e0o C\u00e0i \u0111\u1eb7t > M\u1ea1ng di \u0111\u1ed9ng ho\u1eb7c SIM v\u00e0 m\u1ea1ng di \u0111\u1ed9ng, sau \u0111\u00f3 t\u00ecm c\u00e1c t\u00f9y ch\u1ecdn nh\u01b0 VoLTE, Cu\u1ed9c g\u1ecdi VoLTE, G\u1ecdi 4G ho\u1eb7c Tho\u1ea1i v\u00e0 d\u1eef li\u1ec7u 4G. T\u00ean v\u00e0 v\u1ecb tr\u00ed c\u1ee7a t\u00ednh n\u0103ng c\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y h\u00e3ng v\u00e0 phi\u00ean b\u1ea3n ph\u1ea7n m\u1ec1m.<\/p>\n

\u0110\u1ed1i v\u1edbi kh\u00e1ch h\u00e0ng Viettel, \u0111\u1ec3 duy tr\u00ec cu\u1ed9c g\u1ecdi tr\u00ean m\u1ea1ng 4G, thu\u00ea bao c\u1ea7n s\u1eed d\u1ee5ng SIM 4G\/5G, thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 VoLTE, b\u1eadt t\u00ednh n\u0103ng n\u00e0y tr\u00ean \u0111i\u1ec7n tho\u1ea1i v\u00e0 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t d\u1ecbch v\u1ee5 t\u01b0\u01a1ng \u1ee9ng. Viettel hi\u1ec7n cung c\u1ea5p d\u1ecbch v\u1ee5 HDCall h\u1ed7 tr\u1ee3 tho\u1ea1i VoLTE v\u1edbi m\u1ee9c ph\u00ed 0 \u0111\u1ed3ng.<\/p>\n

N\u1ebfu kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng cu\u1ed9c g\u1ecdi tr\u00ean m\u1ea1ng 4G, ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra ba y\u1ebfu t\u1ed1: \u0111i\u1ec7n tho\u1ea1i c\u00f3 h\u1ed7 tr\u1ee3 VoLTE hay kh\u00f4ng, SIM c\u00f3 ph\u1ea3i SIM 4G\/5G hay kh\u00f4ng v\u00e0 thu\u00ea bao \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t d\u1ecbch v\u1ee5 tho\u1ea1i tr\u00ean 4G hay ch\u01b0a.<\/p>\n

N\u1ebfu SIM ch\u01b0a t\u01b0\u01a1ng th\u00edch, kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 \u0111\u1ebfn \u0111i\u1ec3m giao d\u1ecbch \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u0111\u1ed5i SIM. Tr\u01b0\u1eddng h\u1ee3p \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng h\u1ed7 tr\u1ee3, ng\u01b0\u1eddi d\u00f9ng c\u1ea7n chuy\u1ec3n sang thi\u1ebft b\u1ecb 4G\/5G c\u00f3 kh\u1ea3 n\u0103ng g\u1ecdi tho\u1ea1i tr\u00ean m\u1ea1ng 4G.<\/p>\n

Trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i v\u00e0 t\u1eaft d\u1ea7n m\u1ea1ng 2G, Viettel lu\u00f4n duy tr\u00ec c\u00e1c ch\u00ednh s\u00e1ch h\u1ed7 tr\u1ee3 d\u00e0nh cho kh\u00e1ch h\u00e0ng b\u1ecb \u1ea3nh h\u01b0\u1edfng, \u0111\u1ed3ng th\u1eddi ch\u1ee7 \u0111\u1ed9ng r\u00e0 so\u00e1t, th\u00f4ng b\u00e1o v\u00e0 h\u01b0\u1edbng d\u1eabn nh\u1eefng thu\u00ea bao c\u1ea7n chuy\u1ec3n \u0111\u1ed5i.<\/p>\n

Kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 \u0111\u1ebfn c\u1eeda h\u00e0ng, \u0111i\u1ec3m b\u00e1n ho\u1eb7c c\u00e1c \u0111i\u1ec3m h\u1ed7 tr\u1ee3 c\u1ee7a Viettel \u0111\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m tra thi\u1ebft b\u1ecb, SIM v\u00e0 kh\u1ea3 n\u0103ng g\u1ecdi tr\u00ean m\u1ea1ng 4G. T\u00f9y t\u1eebng tr\u01b0\u1eddng h\u1ee3p, kh\u00e1ch h\u00e0ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u0111\u1ed5i SIM v\u00e0 ti\u1ebfp c\u1eadn c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh h\u1ed7 tr\u1ee3 thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p \u0111\u1ec3 duy tr\u00ec li\u00ean l\u1ea1c.<\/p>\n

Viettel khuy\u1ebfn c\u00e1o kh\u00e1ch h\u00e0ng n\u00ean ch\u1ee7 \u0111\u1ed9ng ki\u1ec3m tra s\u1edbm thay v\u00ec ch\u1edd \u0111\u1ebfn s\u00e1t ng\u00e0y 15\/9. Do vi\u1ec7c t\u1eaft 2G \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo t\u1eebng giai \u0111o\u1ea1n, t\u1ea1i m\u1ed9t s\u1ed1 khu v\u1ef1c, v\u00f9ng ph\u1ee7 2G c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thu h\u1eb9p ho\u1eb7c d\u1eebng tr\u01b0\u1edbc th\u1eddi \u0111i\u1ec3m to\u00e0n m\u1ea1ng ng\u1eebng ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

Vi\u1ec7c d\u1eebng c\u00f4ng ngh\u1ec7 2G gi\u00fap gi\u1ea3i ph\u00f3ng t\u00e0i nguy\u00ean t\u1ea7n s\u1ed1 cho c\u00e1c c\u00f4ng ngh\u1ec7 di \u0111\u1ed9ng th\u1ebf h\u1ec7 m\u1edbi, n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng h\u1ea1 t\u1ea7ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5, \u0111\u1ed3ng th\u1eddi th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh chuy\u1ec3n d\u1ecbch ng\u01b0\u1eddi d\u00f9ng l\u00ean m\u00f4i tr\u01b0\u1eddng 4G\/5G.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u0110\u00f3 l\u00e0 chia s\u1ebb c\u1ee7a nh\u00e0 m\u1ea1ng Viettel cho l\u1ed9 tr\u00ecnh t\u1eaft s\u00f3ng 2G ho\u00e0n to\u00e0n t\u1eeb 15\/9 t\u1edbi. Theo \u0111\u00f3, vi\u1ec7c t\u1eaft s\u00f3ng 2G kh\u00f4ng ch\u1ec9 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn nh\u1eefng ng\u01b0\u1eddi \u0111ang s\u1eed d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i 2G v\u00ec m\u1ed9t s\u1ed1 smartphone 4G v\u1eabn c\u00f3 th\u1ec3 b\u1ecb gi\u00e1n \u0111o\u1ea1n kh\u1ea3 n\u0103ng nghe g\u1ecdi n\u1ebfu ch\u01b0a […]\n","protected":false},"author":2358,"featured_media":50779,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[3045],"tags":[3230,3277],"class_list":["post-50778","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghe","tag-dien-thoai-4g","tag-tat-song-2g"],"yoast_head":"\nT\u1eaft s\u00f3ng 2G c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 \u0111i\u1ec7n tho\u1ea1i 4G<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/saigonbiz.com\/vn\/tat-song-2g-co-the-anh-huong-den-ca-dien-thoai-4g\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u1eaft s\u00f3ng 2G c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 \u0111i\u1ec7n tho\u1ea1i 4G\" \/>\n<meta property=\"og:description\" content=\"\u0110\u00f3 l\u00e0 chia s\u1ebb c\u1ee7a nh\u00e0 m\u1ea1ng Viettel cho l\u1ed9 tr\u00ecnh t\u1eaft s\u00f3ng 2G ho\u00e0n to\u00e0n t\u1eeb 15\/9 t\u1edbi. Theo \u0111\u00f3, vi\u1ec7c t\u1eaft s\u00f3ng 2G kh\u00f4ng ch\u1ec9\" \/>\n<meta property=\"og:url\" content=\"https:\/\/saigonbiz.com\/vn\/tat-song-2g-co-the-anh-huong-den-ca-dien-thoai-4g\/\" \/>\n<meta property=\"og:site_name\" content=\"C\u1ed9ng \u0111\u1ed3ng SaigonBiz\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SaigonbizGroup\" \/>\n<meta property=\"article:author\" content=\"fb.com\/phamleminhdinh\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-01T05:10:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/saigonbiz.com\/vn\/wp-content\/uploads\/2026\/09\/tat-song-2g-co-the-anh-huong-den-ca-dien-thoai-4g.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"828\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"T\u1ea7n Minh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" 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