How can I unlock my phone's SIM slot which says an invalid SIM card?

Card Slot 2 nano SIMs More Standby Mode Dual SIM Dual Standby Mobile Phone More Net quantity 1 Unit More 1 Actual network functionality

And what is its price ? 2 yrs Pablō Thee Secōnd Pls how much is for the Itel S18 is available for N59,900 Please visit phones-and-

price of phone in slot I did see the Samsung Galaxy A55 that fits the bill pretty well, however the price seems quite low for a phone released this year, so I'm

prices of phones in slot price at realme official store realme 12x With both a SIM slot and a dedicated microSD slot, you get more options to use your phone the way you want