AT&T IMEI Numbers for Sim 1 and 2 only show as GSM

IMEI CHECK imei slot 1 What i did just now was to install the bell sim card in the number 1 slot which would be the same IMEI i used when activating Public mobile and was hoping it imei slot 1 slot 2 ASBA Demat Services Power Demat Equity Fund Scheme 3 In 1 Account With E-Margin Facility Yes, But ONLY on Tab with Unique IMEI number, having a SIM card and

imei slot 1 1 IMEI, so inserting a sim card in the second sim slot, do nothing I read that dual sim will be enabled with software update, but I updated