This monster is based on a cellular telephone, as indicated by its name, appearance and the ability to call out Morphtronics. Its Japanese name is derived from "mobile phone", which is pronounced "mobairu foon" in Japanese.
The fact that this monster's numbers 1-6 are all together while the rest (7-9) are separate is a reference to this monsters effect's using 6-sided dice.
Oddly, this card's first effect includes the text, "Special Summon 1 Level 4 or lower "Morphtronic" monster" even though there are no Morphtronics that are above Level 4 anyway, meaning the Level restriction is not needed.
This is the only "Morphtronic" card whose name is regionally-based; the name "Morphtronic Celfon" refers to the North American term "cell phone" (short for "cellular phone"), whereas such devices are called "mobile phones" in Commonwealth English.
When this monsters effect activates, the dials on its body light up, and the yellow light goes from number to number.
When this monster is Normal Summoned, it is in a cell phone form, before transforming into a bot-like appearance.
This is the only "Morphtronic" card to be printed as anything higher than a Rare.