Both the machine and the phone are light metallic blue. It is held together by bamboo structure and there is a purple clam sign above the buttons, which are black and have the numbers transcribed in white. The coin slot is also black.
The pay phone is a different type made out of metal that is surrounded by a layer of another metal. It includes an attached phone with a rotary dial, a coin slot to insert the coins, and a clam at the top.
The pay phone has the same appearance as the one in "Party Pooper Pants," except some of the colors have changed and the coin slot is in the top right corner.
Role in series
The pay phone is used by No Name to call SpongeBob in his house. No Name breaths heavily into the phone, which frightens SpongeBob.
"Party Pooper Pants"
The pay phone is used by SpongeBob to call Patrick to let him back into his house, out of which he got locked.
The SpongeBob SquarePants Movie
Plankton is shown using it to hear the voicemail of Clay, the fake guy who Mr. Krabs allegedly sold King Neptune's stolen crown to, when in reality this was a framing ploy set up by Plankton.
"Wishing You Well"
Mr. Krabs tries to retrieve a quarter out of a pay phone coin slot, which he succeeds in but gets slapped with a purse by the woman who apparently owns it.
When SpongeBob is cleaning windows at the Krusty Krab he sees Plankton using a wrecking ball. SpongeBob thinks Plankton is going to hit the Krusty Krab. He then goes to the pay phone to call Mr. Krabs and tells him about it. A voice recording from Mr. Krabs is heard, which tells him "Please deposit 25 cents to continue this call." SpongeBob does as told and warns Mr. Krabs about Plankton.
"Lost in Bikini Bottom"
SpongeBob finds a pay phone and calls Squidward with it, asking what he should do. The phone operator says that he needs to put in one dime to continue his call with Squidward. He spots an abandoned sofa and then sees three fish sitting on it. SpongeBob puts his hand on the sofa and finds two nickels instead of one dime.
He is not able to continue his call, as a petty cab driver, Scott, drives him to a restaurant.