IMEI 1 and IMEI 2: Why my phone has two IMEI numbers?

imei slotAs the phone is a European version and has the certificate of EU, besides Anatel(I am based in Brazil), consequently IMEI slots are locked toIf you have SIM card only in slot2 IMEI for that slot will be used otherwise if you have SIM card in slot1 or in both slots or no SIM card at