I am using a Samsung Galaxy Core Duos (GT-i8262). When I bought it, I was able to use both SIM cards. But after some time I was having problem that only SIM 1 works, other SIM always says "no network card". First the OS was Android 4.1 but now I ave rooted it to SaMyKat V3, Android 4.4.2 – and 2nd SIM is not working.
protected by Community♦ Jan 5 '15 at 4:59
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
Would you like to answer one of these unanswered questions instead?