Split - data SIM in Poland

[Przemolog]

Originally Posted by Asick

So, you mean before Plus was detected as 0697... and currently it's just 697...? This is what I meant above, correct CID is given only with Era. For example, here it's used to add +7.. in CID for calls made to ANY direction. This is in fact more useful even at home, it allows people to add numbers to their phonebooks right after detected in the international format (thus allowing to call them from anywhere in the world with no prefix mess) and so on.

Hmm, I think that each operator sends full CID (i.e. with +4 everywhere, but Orange and Plus just cut it before reaching the particular SIM (even a foreign one, roaming in Poland). I don't know the reason for using such a format. Anyway, CID format shouldn't affect outgoing calls in international SIMs since their callback features are based on USSD or SMS, not CID.

Of course, saving numbers from own country in the international format makes sense, in general. However, Plus and Orange use USSD in prepaid roaming (whereas Orange supports direct dialling in some networks, it's always even more expensive than using USSD) so the "full" numbers stored in the SIM/phone are useful just for SMS/MMS sending. But, as long as "native" SMSC is used, national prefix isn't really necessary for sending SMSes.