Auto data SIM switching

You can set to switch to the other SIM automatically when one SIM is out of its service area or the data transmission speed of the SIM has become slow.
  1. Find and tap [Settings] > [Network & internet] > [Auto data SIM switching].
  2. Tap the switch for the mode you want to use to enable it, and then select options to adjust.

    • [Switch data SIM when out of service area]: Switches to the other SIM automatically when one SIM is out of its service area. When you use the [Switch data SIM when out of service area] mode, set the preferred data SIM.

    • [Switch data SIM when transmission speed becomes slow]: Switches to the other SIM automatically when data transmission speed has become slow. When you use the [Switch data SIM when transmission speed becomes slow] mode, set the download or upload speed threshold for switching the data SIM.

      Select [Customize] to set the download or upload speed threshold by entering a value.

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