Fat Finger Dialing
Be careful to dial correctly when placing collect or other operator-assisted calls. Otherwise, you or the party you are calling may pay more than expected for the call.
For example, suppose you are making a call from a payphone intending to use 1-800-CALL-ATT, but instead accidentally dial 1-800-CALLL-AT. Your call will go through, but you are not using the phone carrier you believed you were using. The carrier may not identify themselves before connecting the call, so you will not know that you have misdialed. What has happened is you've reached a company with an 800 number similar to a well-known one that is hoping you will misdial. Quite often, the charge for these misdialed numbers is 2 to 3 times higher than what it would have been had you reached your intended carrier.