Cell Phone Culture Shock!
In this culture, voicemail is non-existent and texting is seldom used. The result: a cultural expectation to answer the phone unless in an emergency! And if not answered, a return call as soon as possible. Phones are answered mid-class and mid-conversation. It is actually more rude to the caller to not answer the phone than to the person present whose meeting the call interrupts. Please pray for patience in this small matter as it is actually the cause of much frustration.