Android Device to Device Messaging using Google Cloud Messaging (GCM). SMART MOVES JOURNAL IJOSCIENCE, [S. l.], v. 1, n. 1, 2015. DOI: 10.24113/ijoscience.v1i1.6. Disponível em: https://ijoscience.com/index.php/ojsscience/article/view/6. Acesso em: 15 jun. 2026.