Question 1
Which happened earlier?
A
First mobile phone call
✓ Earlier
B
Seoul Olympics opening ceremony
First mobile phone call (3 April 1973)
came before
Seoul Olympics opening ceremony (17 September 1988)
Question 2
Which happened earlier?
A
Launch of the iPhone
✓ Earlier
B
First Android phone released
Launch of the iPhone (29 June 2007)
came before
First Android phone released (23 September 2008)