The modem does not recognize Korean SIM cards (what?)

[zetabeta]

i know that sim cards have features which sometimes make them as incompatible. some cases is informative and some cases physical like voltage.

do you just have bad luck that eg25g thinks that there is no sim in a slot.

i don't know what network standards korea uses, but if sim cards are cdma without lte, then i think it causes some headaches.