Android APN settings. Open the Access Point Names or APNs menu. In Settings, look under Wireless & Networks or tap the Connections tab. Touch Mobile network. You may need to touch More settings, More..., or More networks first. Touch Access Point Names. Touch the T-Mobile APN if one is available. If not, press the Menu key and touch new APN.
If you canʼt send or receive email on your Samsung Galaxy S9+, you might need to update the email server settings. Please contact your email provider to obtain the correct settings. If you canʼt get the email server to connect, ensure the settings are correct and working on a home computer.