I don't know why only samsung devices when starting with Sim card it restrict some wifi channels even it is not restricted by the government. I am talking about egypt and tried several times with screenshots to contact samsung but they didn't underst...
Wifi works on different bands specially 5ghz has low speed and high speed channels ( 36 40 44 48 149 150 152 160) as attachments. When there's no sim card the device see all these wifi frequencies and i can connect to any wifi router or android auto ...
