Idioms and Vocabulary for Technology Topics on the IELTS Test

We're talking about idioms today and I want to tell our listeners an idiom not to use. Vlad wrote in asking for some more specific examples of vocabulary and idioms he could use on the test. The first idiom is bells and whistles. So lots of questions will ask you about devices and equipment. But there's some slang, some extra words you could use instead of device.