once type contact number which u want to call them, you will get sim option from there you can choose which you want to.. if your query is solved please select my comment as solution

there are other countries would recieved updates after us...

what unique feature is available with IOS?? samsung has lot more feature than IOS... here the reply for your question, why 2 major updates for S9 coz Google has permitted OEM to provide 2 major updates only.

beta version has always bugs like you mentioned... if you need bug less version then wait for some time to get stable version

yeah u r right, samsung has to pay so called the weather channel for providing data... so they might give advertising their channels in the app