Garble … voice emerging from the end of a long tunnel … static … click … “Can you hear me? … Hello … are you still there?”
Does this sound like you’re calling your credit card customer service department – the one they’ve outsourced to India?
That’s how you sound to your prospective employer, on your cell phone.
I talk to job hunters on cell phones all the time, and I hate it (I run a retained search firm). I often can't understand them.
Some job hunters, especially junior ones, have nothing but a cell phone. I've seen some argue viciously on these types of boards (not this one) that the employer should understand how expensive it is to live and bear with the poor quality of how they sound on the phone.
However, what the employer or recruiter hears on the phone is all we have to go on. We can't tell if the job hunter is coming across poorly because they can't hear us or because they simply are a poor communicator. You may not get a second chance, especially as the market becomes more competitive. Do your best to make calls from a landline (good salespeople do their prospecting from landlines, where they sound the best, and when you're job hunting, you're selling).
Talk to employers by cell only if you can't get to a landline or can't be reached any other way.
For more on this, and how to look the best to an employer when they can't see you, check out these two links:
Why Cell Phones are Bad News For Job Hunters
http://www.jobmagician.com/cell_phones.shtml
The Perfect Virtual Appearance for a Job Hunter
http://www.jobmagician.com/virtual_appearance.shtml
Job Magician