Phone says insert sim card emergency calls only all the time this is a new phone Samsung Galaxy j4s tried different sim card

[KHAKI-Warrior]

Sim card not accepted in any way 

[SaudA]

Hi @KHAKI-Warrior,

If you've already tried a different SIM card, then it's best if you take it back to the retailer and get a replacement. If you've had it for more than 28 days, then please get it inspected by an engineer. You can locate your nearest service location here: http://www.samsung.com/uk/support/servicelocation/

Alternatively, to arrange a courier service, call 0333 000 0333.