The ability for a user on an iOS device to view confirmation that a message has been read by a recipient using an Android device depends primarily on the messaging platform employed. This functionality, often referred to as read receipts, is not inherent to the core SMS/MMS protocol traditionally used for cross-platform messaging. Instead, it relies on features implemented by specific applications.
The proliferation of messaging apps that operate independently of the standard carrier network has led to increased cross-platform compatibility. These applications often utilize proprietary protocols to enhance the user experience, including the provision of delivery and read confirmations. The benefit is enhanced communication awareness. Historically, standard SMS/MMS messaging lacked this level of feedback, making it difficult to ascertain if a message had been received and viewed.