|This article is about a/an changer in Hyakujuu Sentai Gaoranger.|
Transformation Phone G-Phone (変身携帯Gフォン Henshin Keitai Jī Fon): The transformation devices of the five main Gaorangers. The G-Phones transform into an animal and then human mode when the Gaoranger activate the change function. The transformation call is "Gao Access! HA!", and the phrase "Summon, spirit of the earth!" is called out while the helmets are formed. Can also be used like a regular cell phone and is used by the Gaoranger to communicate with each other. Each Gaoranger has a different identification number; 1. GaoWhite, 2. GaoBlack, 3. GaoBlue, 4. GaoYellow, and 5. GaoRed.
At the climax of the Legend War, the G-Phones were made redundant when the Gaorangers sacrificed their powers with the rest of the first 34 Super Sentai to destroy the invasion force of the Space Empire Zangyack. Resurfacing as Ranger Keys, the Gaoranger powers would be used by the Gokaigers to assume their forms via the Gokai Change. Ultimately, the Gokaigers returned their borrowed powers to their rightful owners after overthrowing Zangyack.