Basically their phone are bundled with their phone.

It’s not your ‘cell phone’ but your ‘mobile phone’.

Often calls b.often call c.calls often d.call often

are often written b) is often wrote c) were often written

However, nowadays many people use their phones as their primary camera.

In fact many people now use their cell phone as their primary phone.

Many people now use cell phones as their primary phone.

Many people are now using mobile phones as their main phone line.

That means they filmed their phone vanishing, on their own phone.

A chance to use their mobile phones and computers,

Can my participants both use their landline and their mobile phone?

They're looking at their phone, or at their Apple Watch.

They’re looking at their phone, or at their Apple Watch.

Take their phones away and they’re completely lost.

Suddenly stopping using their computer or phone.