Taking the online unscored practice test 

You must take the unscored test within 28 days of purchasing it.
You can take the unscored test as many times as you like during the 28 days after you purchase it.
Yes. You can stop during the test, save everything and come back later to complete it.
The unscored practice test is a full-length test and very similar to the actual PTE Academic test. It includes all the sections and question types contained in the actual test, although it is not timed and you can move backward and forward through the questions.
Yes. You can see the correct answer or sample response to a question at any time during the test. Where these are example spoken or written answers you will also see examiners’ comments.
Yes. You can step backward and forward through the unscored test as you wish.
No, the unscored practice test is not timed.
No. Your answers will be saved as you go. You will be able to return to complete the test, though you will have to step through from the start.