Why when you changed the sim card in Spain does your mobile allow you to ring out and receive calls but has stopped you being able to txt out or get txts in?

When you change the SIM card in Spain, your mobile may connect to the local network, allowing calls to be made and received, but issues with texting can arise due to network compatibility, incorrect settings, or restrictions on the SIM card itself. It's possible that the new SIM isn't properly configured for SMS services, or the messaging app settings need to be adjusted. Additionally, some networks may require activation for SMS or may not support international texting with certain SIM cards. Checking the APN settings or contacting the service provider can help resolve these issues.