iPhone 5

[claudiutk]

The main one being that in 3G the UE is required to transmit/receive the DPCCH continuously while in 2G the UE is only required to transmit/receive one timeslot out of 8 (GSM TDMA frame structure) and shut down its transmitter/receiver in between.

So what about LTE? Even though it is early days for voice calls over LTE, the actual implementation allows for DRX/DTX in connected mode so it is possible that current consumption actually improves over 3G.

In digital communication, Gaussian minimum shift keying or GMSK is a continuous-phase frequency-shift keying. (2G)

Phase-shift keying (PSK) is a digital scheme that conveys data by changing, or modulating, the phase of a reference signal (the carrier wave). (3G)

Se pare ca:

La standby si apel consuma dublu 3G-ul

La transfer de date consuma cvadruplu 3G-ul dar termina de 3x mai repede, deci per total consumul 3G e mai mare pentru date gen 100kb (messenger) dar mai mic pentru transferuri mari (100mb)

Daca dai mereu manual 2G-3G apoi 3G-2G cand ai terminat cu netul consumi o gramada doar pentru a face trecerea

Interesant, daca mai gasesc mai postez