The color of the line is insignificant. Pregnancy tests can only tell you if you are pregnant. The darkness of the line is no indication of how pregnant you are or how far along you are. You can use the brand tests, even from the same box and get a lighter or darker line any time.
The phantom calls that you have recieved, also known as ghost calls is usually caused by either a poor quality phone line, aka has a high amount of noise or foreign battery due to the line or your on an older copper line.
be affected by latency. Four key causes of latency are: propagation delay, serialization, data protocols, routing and switching, and queuing and buffing. Propagation Delay Propagation delay is the primary source of latency. It is a function of how long it takes information to travel at the speed of light in the communications media