If you are using a different SMS app besides Google Messenger, it may have different options. The general process should be pretty similar.

Alternatively, you can tap the toggle switch next to “Auto-download MMS when roaming” to prevent your phone from downloading MMS files while out-of-network. This will prevent you from receiving roaming charges.

Additionally, you can turn off “Auto-retrieve while roaming” to prevent your phone from downloading MMS files while out-of-network. This will prevent you from receiving roaming charges. If you set the “Restrictions” option to “Restricted”, this will prevent your long text messages from being converted to MMS. This will prevent you from getting charged extra.

Additionally, you can turn off “Roaming auto-retrieve” to prevent your phone from downloading MMS files while out-of-network. This will prevent you from receiving a roaming charge.

Signal must be set as your default SMS app to receive text messages using Signal.