Question 1:

Who is credited with the invention of the first handheld mobile phone?

Explanation: Martin Cooper is credited with the invention of the first handheld mobile phone.

Question 2:

Which year was the first commercial mobile phone call made?

Explanation: The first commercial mobile phone call was made in 1973.

Question 3:

What is the technology used in modern mobile phones to transmit voice and data wirelessly?

Explanation: Modern mobile phones use cellular technology to transmit voice and data wirelessly.

Question 4:

Which company introduced the first commercially available mobile phone?

Explanation: Motorola introduced the first commercially available mobile phone.

Question 5:

What is the standard SIM card size used in most mobile phones?

Explanation: The standard SIM card size used in most mobile phones is Nano-SIM.