Sentence 1: Frank bought a cheap phone at Walmart last month. 
 Sentence 3: Whenever Frank tried to make a phone call the phone shut off 
 Sentence 4:  He was so fed up with the phone at this point 
 Sentence 5:  Frank bought the new iPhone 
 Option 1: The phone wasn't very user-friendly. 
 Option 2: The phone was user-friendly.