Hi, one of my friends got into a similar situation last semester, she forgot to put her phone under the table and didn't actually turn it off (she thought she did before entering REB but it turns out just being locked instead of being turned off). What happened next is you would get an email regarding this incident shortly (probably during next week after all exams are done) and they would ask you to attend a student discipline committee hearing to explain the whole situation, and your results for this subject will be withheld before the committee make a decision. My friend didn't tell us explicitly what happened in that meeting but she said as long as you are being honest and tell them you did not intend to cheat then the outcome should be fine. Her result was released a couple days later and there's no penalty applied to her. Hope your case could resolve well too.