After you remove or transfer your SIM card, insert the tray completely and in the same orientation that you removed it (it will fit only one way). Use only the SIM tray that came with your device. For example, a SIM tray from an iPhone 6s will not fit in an iPhone 7.
Total test time is 205 minutes if taking the Writing/essay. Without the essay, the ACT is 155 minutes actual test time. Individual sections are always in the order of: English (45 mins.); Math (60 mins.); Reading (35 mins.); Science (35 mins.); and, optional Essay (30 mins.).
Note to high schoolers: If you want to do well on your ACTs, and then go on to succeed in college, take four years of English and at least three years each of math, social studies, and science. That's one of the suggestions in a new report issued today by ACT, Inc., the nonprofit organization behind the test.