Damn this rebelsim is not worth at all.

First of all its not working Out of the box , second i am stuck with iPhone on T-Mobile in Macedonia, i bought this phone with 2.2.1firmware 2.30 baseband and 6.02 bootloader, the worst case of unlocking. So i bought an rebelsimcard , pop that in phone with my card from another operator (Cosmofon).
It shows for 10 sec name of that Cosmofon operator then No Service.
I upgraded rebelsim to newest version, then manually selected network from another phone , put that card in iPhone and it shows T-Mobile as operator , not Cosmofon , which is nonsense but its working as 2g . I turned on 3g and again it shows as operator Cosmofon with 3g sign for 10 sec then again No Service ...

Maybe someone else have this same symptoms , PM if you have any solution.

Almost all piggyback SIMs, including Rebel SIM, have issues connecting to and staying on 3G networks. This is a common issue.

If it works on 2G, then I'd suggest staying in 2G only mode, especially if it's necessary for you to be using the phone with that Cosmofon SIM (for business, etc).

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HowardForums member, active in the Apple and related subforums.
Member of the Samsung Blackjack Users Group

100% agree with this - despite what a lot say (and what a lot refuse to deny) the piggyback SIM cards 99% of the time cannot work with 3G enabled.