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Est-ce que la 4G veut dire 3G+ ?

Non, il s'agit bien de deux normes de téléphonie mobile différentes. La 3G+ est une évolution de la 3G, la 3ème génération de téléphonie mobile. Cette dernière s'appuie sur une technologie de transmission des données baptisée UMTS (Universal Mobile Telecommunications System), avec des débits de 384 Kilobit par seconde (Kbit/s).

La 3G+ est quant à elle un dérivé de la 3G,appelé HSPA (High Speed Packet Access. Cela permet surtout d'améliorer la vitesse de connexion : avec la 3G+, on atteint des vitesses de connexion maximum de 14Mbt/s.

La 4G est elle le fruit d'une nouvelle technologie appelée « LTE » pour « Long Term Evolution », les débits vont culminer à 100 Mbit/s (certains chercheurs pensent même atteindre à terme 5 Gigabit/s !).

Voir aussi, Que veut dire LTE ? et Qu'est-ce que la 4G ?

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