Final answer:
The call from Enrique's cell phone was his last chance to speak with his mother, not divulging the seriousness of his AIDS-related illness, instead saying he had the flu and would visit soon.
Step-by-step explanation:
The call made from Enrique's cell phone was so important to him because it was the last opportunity he had to communicate with his mother before his untimely death from AIDS-related complications. During their conversation, even though Enrique was experiencing symptoms such as diarrhea and weight loss that suggested something serious, he did not disclose the severity of his illness to his mother. Instead, he downplayed his condition as the flu and promised to visit her for Thanksgiving. Sadly, Enrique passed away in October of 1985, without revealing the gravity of his situation to his mother or potentially even understanding it himself.