This is a mistake I have made three separate times in different forms.
The first is not having the correct phone number. Now, jobs will either email or call so having the correct number, but wrong email or vice versa will not always lead to a missed opportunity. However, it will from time to time have the potential employer calling the wrong person or sending out email correspondence in vain. And unless you are very high quality candidate, they will have other people to contact and move on to without trying to contact you other ways.
The first is not having the correct phone number. Now, jobs will either email or call so having the correct number, but wrong email or vice versa will not always lead to a missed opportunity. However, it will from time to time have the potential employer calling the wrong person or sending out email correspondence in vain. And unless you are very high quality candidate, they will have other people to contact and move on to without trying to contact you other ways.
I have done this. I got a new cell phone and my number did not carry over. I forgot to change it on my resume for one job, thankfully I caught it after I PDFed it.
Another mistake is to put an email that you do not often check. I used my University email when I applied for jobs at the university, but when I switched from a student to an alumni they stopped forwarding to my main email. I almost missed an email about coming in for an interview because I don’t often check in as I assume it forwards. I realized that I hadn’t received any notifications that I applied and signed in to check. Thankfully, I didn’t miss anything but junk mail.
This is the worst mistake because it is the most likely to keep you from getting a job you are qualified for. It is likely shooting yourself in the foot even before the interview happens. So, when applying, make sure your contact information is not only correct, but the ones that you will actually check.