This guide explains how to use Rootio. Use the Chats, Calls, Friends, and Settings icons at the bottom of the screen to access the main features. Some features require permission to use notifications, the microphone, camera, photos, or files.
1. Create an Account and Sign In
Create an account
Step 1. On the sign-in screen, select Go to Sign Up.
Step 2. Enter the email address you want to use, check its availability, and request a verification code.
Step 3. Enter the verification code sent to your email address to complete email verification.
Step 4. Enter and confirm your password. It must contain at least eight characters, including one uppercase letter, one number, and one special character.
Step 5. Enter the nickname you want to use in Rootio and complete sign-up. You will return to the sign-in screen when registration is complete.
Sign in
Step 1. Enter your registered email address and select the send icon on the right to request a sign-in verification code.
Step 2. Enter the six-digit code sent to your email address.
Step 3. When the password field appears, enter your password and select Sign In.
- If the code does not arrive, use the resend button to request a new one.
- If you change the email address, the verification code issued for the previous address can no longer be used.
- Repeated sign-in failures may temporarily restrict additional attempts to protect your account.
Reset a forgotten password
Select Reset Password on the sign-in screen and enter your email address. Paste the password reset token sent to your email, then set a new password.
2. Use Chats
Create a chat room
Step 1. Select the Chats icon at the bottom of the screen.
Step 2. Select the pencil button in the lower-right corner.
Step 3. Search for a user by email address or select people from your Friends list.
Step 4. Enter a room name and create the room. Select one person for a one-to-one chat or multiple people for a group chat.
Create a chat with yourself
On the room creation screen, select Me and enter a room name. Messages and files in a Me room are stored only on the current device and are not sent to the server or another device.
- Select the Me filter in the chat list to view only your Me rooms.
- Me rooms are not synchronized with the server. Save any files you need before clearing app data or deleting the app.
Send messages and files
Enter a message in the field at the bottom of the chat room and select the send button. Use the attachment button to send photos, videos, or documents.
- Select a received file card to download, open, or save the file.
- A link preview may appear when a regular message contains a URL.
- Avoid closing the app or disconnecting from the network while a file is being transferred.
Reply, forward, and copy
- Swipe a message bubble to the left or double-tap it to reply to that message.
- Touch and hold a message to open actions such as Reply, Forward, Copy, or Open Link.
- Select Forward, then choose a chat room or friend to receive the message.
- To forward a file message, download every file in that message first.
Manage chat rooms
Touch and hold a room in the chat list to pin, rename, mute, or delete it. In a chat room, use the menu in the upper-right corner to rename the room, invite participants, mute notifications, or report the room.
- Pin: Keep a frequently used room near the top of the chat list.
- Mute: Turn notifications for the selected room off or on.
- Delete for me: Remove the room only from your own chat list.
- Delete for everyone: If you have permission, remove the room from every participant's chat list.
- Report: Report spam, harassment, inappropriate content, fraud, phishing, or another issue.
Find rooms and check unread messages
Select the search icon in the upper-right corner of the Chats screen to find a room by its name or recent message. Use the All, Unread, and Me filters to display only the rooms you need.
3. Make Voice and Video Calls
Start a call
Step 1. Select the Friends icon at the bottom of the screen.
Step 2. Select the phone or video icon beside the friend you want to call.
Step 3. The call connects when the other person answers. During a call, you can mute your microphone, switch between speaker and earpiece, turn the camera on or off, switch between the front and rear cameras, or end the call.
- Allow microphone and camera access when Rootio requests permission for the first call.
- An internet connection is required. Some network environments may delay or prevent a connection.
- After switching between Wi-Fi and mobile data, allow a short time for the connection to recover.
Answer or decline a call
When a call arrives, select Answer or Decline on the incoming call screen or system call notification. Answering a video call opens the in-app video call screen.
- On iPhone, allow notifications so incoming calls can appear while the app is in the background or the screen is locked.
- On Android, notifications, microphone, camera, and an ongoing foreground call notification may be required.
- If the caller ends the call before you answer, the incoming call notification may also close.
Review call history
Select the Calls icon at the bottom of the screen to review outgoing, incoming, missed, declined, and completed calls, including call duration.
- Select the phone or video icon beside an entry to call the same person again.
- Swipe an entry to the left to delete that call record.
- Select the trash icon at the top of the screen to confirm and delete all call history.
4. Manage Friends
Add a friend
Step 1. Select the Friends icon at the bottom of the screen.
Step 2. Select the add person icon in the upper-right corner.
Step 3. Search for the email address the other person used to register for Rootio, then select Add.
After adding a friend, you can view their nickname and email address and start a voice or video call directly from the Friends list.
Search and organize friends
- Select the search icon in the upper-right corner to find a friend by nickname or email address.
- Touch and hold a friend to pin, unpin, or delete them.
- Swipe a friend to the left to display the Delete button.
- Deleting a friend does not automatically remove existing chat rooms or previous messages.
5. Use Settings
Profile
Select the profile card at the top of Settings to change your nickname, avatar, and the device name used for the current device.
Member information
Confirm your current password to set a new password. Account withdrawal cannot be undone, so check whether you need to preserve any data before continuing.
Devices
Review the devices currently signed in to your account and their most recent sign-in times.
- Sign Out or Remote Sign Out: End the sign-in session on the selected device.
- Wipe or Remote Wipe: Clear Rootio app data and end the session on the selected device.
- Delete Device: Remove a device you no longer use from the account's device list.
Important: Remote wipe and device deletion may affect data recovery. Always confirm the target device before continuing.
Import data from another device
Step 1. In Settings, select Import Data from Another Device.
Step 2. Select the verified device that holds the data and send a Prepare Data request.
Step 3. When preparation finishes on the other device, select Import Data on the current device.
- Chat rooms and message data are merged with the data already stored on the current device.
- Attachments such as photos, videos, and documents are not included in data import.
- Both devices must be verified under the same account.
Language
Select System, Korean, or English as the app display language.
Messages
When Read Receipts is enabled, messages are marked as read when you open a chat room. When it is disabled, simply opening the room does not mark messages as read; read status is sent when you send a message.
Notifications
Select the sound used for message notifications. If notifications do not arrive, also check Rootio's notification permission and Do Not Disturb settings in your device settings.
Wallpaper and theme
Select a solid color or pattern for the chat background, and set the app theme to System, Light, or Dark.
Security
When App Lock is enabled, Rootio requires Face ID, fingerprint, or the device passcode when you return to the app. Device authentication is also required when enabling or disabling App Lock.
Information links and sign out
Use Information Links to open the Manual, FAQ, Privacy Policy, Terms of Service, and support information. To stop using Rootio on the current device, select Sign Out near the bottom of Settings.
6. Permissions and Troubleshooting
- Notifications do not arrive: Check Rootio's notification permission, Do Not Disturb mode, and background restrictions in the device settings.
- Call audio is unavailable: Check microphone permission, mute status, speaker or earpiece output, and the network connection.
- Video is unavailable: Check camera permission and confirm that the camera is turned on in the call screen.
- A file cannot be opened: Finish downloading the file and confirm that an app capable of opening that file type is installed.
- Sign-in fails: Make sure you are using the latest verification code and the correct password. If a temporary restriction is displayed, try again after the stated time.
If the issue continues, contact support with your device model, operating system version, Rootio app version, the approximate time of the issue, and a brief description of what happened. Never send your password, email verification code, backup key, or other security credentials.