如何远程停用旧手机的备份应用？无旧设备但已登录关联邮箱

Hey there, let’s work through this problem step by step—since you still have access to the email linked to your old phone, we can use the associated account to manage the device remotely. Below are tailored guides for the two most common mobile systems, plus tips for third-party backup apps:

For Android Devices #

If your old phone runs Android and uses a Google Account tied to your email, here’s what to do:

• Step 1: Open your Google Account dashboard
  On your current device, launch a browser and sign into your Google Account using the email linked to the old phone (you can just search for "Google Account" to get to the login page).
• Step 2: Navigate to device management
  Head to the "Security" section, then look for "Your devices" or "Manage devices". You’ll see a full list of all devices connected to this account.
• Step 3: Locate your old phone
  Find the entry for your unreachable device and tap it to view details.
• Step 4: Disable backup or revoke full access
  • To specifically turn off backups: Look for options labeled "Backup" or "Google Drive Backup" and toggle off the backup toggle for that device.
  • For a more permanent fix (stopping all sync/backup activity), select "Sign out" or "Remove device". This will immediately log the old phone out of your Google Account, so the backup app can’t access your account anymore.

For iOS Devices #

If your old phone is an iPhone/iPad linked to your Apple ID (using the same email), follow these steps:

• Step 1: Access iCloud management
  On another Apple device, go to Settings > [Your Name] > iCloud. If you’re using a non-Apple device, open a browser and sign into iCloud.com with your Apple ID.
• Step 2: View connected devices
  Tap "Devices" (on iCloud.com, this is in the sidebar). You’ll see every device associated with your Apple ID.
• Step 3: Select your old device
  Click or tap the unreachable iPhone/iPad to pull up its details.
• Step 4: Disable backup or unlink the device
  • To stop backups: Find the "iCloud Backup" option and toggle it off for that specific device. This will halt all future backups from the old phone to your iCloud.
  • For full account separation, select "Remove from Account". This unlinks the old device from your Apple ID entirely, blocking all access to iCloud services (including backups).

For Third-Party Backup Apps #

If you used a third-party tool (like Dropbox, OneDrive, or a dedicated backup app) on the old phone:

• Sign into the app’s web dashboard using your linked email.
• Navigate to the "Connected Devices" or "Device Management" section.
• Locate your old phone and revoke its access to the backup service. This will prevent the app from syncing or backing up any more data from the unreachable device.

A quick note: If the old phone is offline when you make these changes, the updates will take effect as soon as it connects to the internet again.

内容的提问来源于stack exchange，提问作者user252911