The phone.
In this smartphone age, I think texts instead of a voice would've been more ominous.
shareYeah, I get what you mean but wouldn't have the same effect; voice vs. text. People would give the same response to a text like the emails from the King of Nigeria. Ignore, then block. The voice was able to convince him to check it out, then proof with the money into his bank account.
shareIt still should have been a smartphone.
This movie came out in 2014. Only african villagers still use generic flip phones.