Settings may vary for each device.

  1. Install the SIM card into your smartphone.
  2. Select the mobile network in the settings, find "Network Type" / "Cellular Data - Data Parameters" (or similar).
  3. Set only 2G network from the offered list.
  4. Activate in the Internet settings for this SIM card.
  5. Disconnect the Wi-Fi network, check voice call, SMS and Internet access.