I couldn’t verify a Gakuran-specific phone location from the available result, but the general Roblox answer is usually: go to the in-game electronics/phone shop, open the purchase menu, and buy/equip the phone from your inventory.

Quick Scoop

For most Roblox games with phones, the steps are:

  1. Find the phone store or electronics shop.
  2. Interact with the phone display or counter.
  3. Buy the phone with in-game currency.
  4. Open your inventory/backpack and equip it.

In similar Roblox city games, phones are often unlocked by clicking the phone item in a shop, then it appears in your inventory automatically. One Roblox example also shows players reaching a dedicated phone location and selecting the phone there, which suggests the process is usually tied to a specific store or menu rather than a hidden quest.

What to try in Gakuran

  • Look for an electronics, convenience, or general store.
  • Check shop menus for a phone icon or device section.
  • Open your backpack/inventory after buying it.
  • If nothing appears, rejoin the server and check again.

If it still does not work

Some games hide phones behind a level, role, or quest requirement, and some only let certain teams or jobs use them. If Gakuran uses a special system, the phone may be in a settings/app menu instead of a physical shop, but I could not confirm that from the available source material.

TL;DR

Most likely: go to the phone/electronics shop, buy the phone, then equip it from inventory.