Hi I have Lumia 630 and I use internet on my 3g connection but sometimes it has limit of 100 Mb and sometimes only 20 Mb, I just don't know what is going on I haven't changed the wifi setting on phone so what is really the cause?
I vaguely remember that one of those numbers (100?) is for app downloads and the other (20?) is for generic file downloads, like a video or audio file.