Split - data SIM in Poland

[Przemolog]

Originally Posted by Asick

Do you mean this half-functionality remains after a top up, so it's impossible to turn the SIM back to it's normal state? Or, do you mean the SIM could be registered on the network (thus allowing to receive calls/SMS or may be *123...) for a year after expiration and could be turn back to it's normal life after any recharge?

The latter. Topping-up restores the full functionality (including the remaining credit). Now I realised that you can check if your iPlus is still valid. Just call its number from Russia. If you hear the message that number is unavaiable this will mean that it's still "alive". Since there's no VM, it won't cost you anything. I've just checked a Simplus which is in this one-year period and the VM answered.

Originally Posted by Asick

Here I can't find the number completely, but I'm sure it's +486... Is it any different from +487...? By the way, there's one strange thing. It was always detected as 6... on the phones that I called, including +7... Russian phones used in Poland (I didn't call Russian phones located in their home networks but I guess this might be the same). I guess it's not normal and correct, there should be +48... prefix.

Just curious. Until last summer the mobile numbering in Poland was moreless clear:
500,501,...,517 - Idea/Orange
60x,66x,69x (x-odd) - Plus/Simplus/iPlus
60x,66x,69x (x-even) - Era/TakTak
88x - "fake" MVNOs Heyah and Sami Swoi
Last year also 7xx mobile prefixes were enabled. So far I know:
788 - Heyah
783 - mBank mobile
781 - Plus.
790 - P4 (test phase).

As to Caller ID, you mean calling from iPlus to Russian SIMs roaming in Poland?
And the +48 prefix (Poland) was replaced with +7 prefix (Russia), right?
That's really strange. My experiences with SIMs roaming in Poland are restricted to UM only, but I can say that the Caller ID is the same as in the "hosting" network. I mean that I called from a Polish number to UM roaming on each of the three networks and I got the following results:
in Era: the number preceded with +48
in Orange: no prefix
in Plus: the number preceded with 0.

While you were in Poland, Plus was changing its Caller ID format by dropping the leading zero. However, I have no idea if it might have affect the country prefix (I guess it didn't).