Mobile data is consumed abnormally on my HUAWEI phone/tablet
Applicable products： Tablet，Smartphone
Applicable products：
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Mobile data is consumed abnormally on my HUAWEI phone/tablet

Mobile data is consumed even when the device is connected to a Wi-Fi network

This may be because you have enabled Wi-Fi+ or Network Acceleration, or are using special apps (such as WeChat and QQ). For more details, please refer to My phone still consumes mobile data when connected to a Wi-Fi network .

The secondary SIM card is consuming data

Once the secondary SIM card establishes a connection with the 4G network, it will consume a small amount of data, even when Mobile data is disabled, as the network will send special data packets to the card, or when the card receives MMS messages.

To resolve this issue, perform the following:

  1. It is recommended that you go to Settings > Dual SIM settings/SIM management and disable Internet access during calls/Switch data connection during calls/Smart Data Switch.
  2. If you do not want the secondary SIM card to consume data when receiving MMS messages, perform the following:
    1. Disable network access permission for Messaging. To do so, go to Tablet Manager/Optimizer > Mobile data > Networked apps > System apps, find and touch Messaging, and disable Mobile data.

      Network access permission for Messaging cannot be disabled on certain devices. Actual interfaces may vary.

    2. You can contact your carrier to cancel the MMS service.
  3. You can also contact your carrier to deny network access to the secondary SIM card.

For more information about mobile data consumption, please contact your carrier for a detailed mobile data usage record that will contain the websites or IP addresses that consume your device's data.

Email app automatic synchronization is consuming data

  1. After automatic synchronization is enabled in the Email app, photos or videos in emails will be automatically loaded, which consumes mobile data. You can adjust Sync frequency and Number of emails loaded at a time as required.
    • To set Sync frequency to 15 minutes, open Email, touch the ∷ icon in the upper left corner, then Settings, and select the account for automatic synchronization.
    • To set Number of emails loaded at a time to 25 emails, open Email, touch the ∷ icon in the upper left corner and go to Settings > Number of emails loaded at a time.
  2. If you enable the auto-download of Email attachment and Wi-Fi+ features, mobile data will be enabled when the network condition is poor. Attachments will be downloaded using mobile data, resulting in increased mobile data consumption. You can disable Download attachments and Wi-Fi+.
    • To disable Download attachments, open Email, touch the ∷ icon in the upper left corner, Settings, and then Number of emails loaded at a time.
    • To disable Wi-Fi+, go to Settings > Wi-Fi > More Wi-Fi Settings > Wi-Fi+ on your phone/tablet.

The operating system is consuming data

App database updates will consume mobile data. To resolve this issue, perform the following:

  1. Set Update number database to Wi-Fi only in Tablet Manager/Optimizer.
    • EMUI 9.x or later: Go to Tablet Manager/Optimizer > Blocked, touch in the upper right corner, and set Update number database to Wi-Fi only.
  2. Open Tablet Manager/Optimizer, touch in the upper right corner, and go to Antivirus software update/Online virus scan > Wi-Fi only.
  3. Disable network access permission for apps that you don't use very often.

    Open Settings, search for and access Apps, touch an app that is not frequently used, go to Data usage > Mobile data/Network access, and disable Mobile data.

    If an app still shows that it is consuming a small amount of data in Tablet Manager/Optimizer after it has been denied access to the network, this is because some native services are not controlled by the network connection status of the app, and still use mobile data even after Mobile data and Background data have been disabled.

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