Corrected entry: While Powell is getting a massage outside the temple, he talks to Lara over the phone - Powell is using an Ericsson phone that is not flipped open and cannot be used in this state.
Corrected entry: According to Lara's father, the two halves of the triangle were hidden on opposite sides of the world. However, Siberia and Cambodia are both on the same continent. The opposite side of the world from these two countries would be somewhere around South America.
Correction: You wouldn't expect people from 5,000 years ago to actually know that there was such a continent as America, which was "discovered" in 1492... They hid the triangles in opposite sides of the world they knew.
Correction: That model of Ericsson phone can be used without fliping it open, I have one myself.