Wei Zi's arrow pointing outward.

There is a small arrow on the left side of the call record. The arrow points to the upper left corner for outgoing calls, and the arrow points to the lower right corner for incoming calls. Each call record has a green circle and an inverted exclamation mark next to the incoming and outgoing times. Click on this sign, which says incoming call (from others) or outgoing call (from yourself).

Call records are marked with inward arrows and outward arrows.