After switching from E71 to E52, I found there are a lot of cuts in VOIP internet calls. This is not a problem of the VOIP provider as I directly compared two consecutive calls from E52 and from E71 one after the other.
According to the technical sheet, E71 and E52 use two different built-in VOIP stack/software, and it seems the voice quality of E52 has degraded quite a lot.
Anyone got the same issue?