Joke Collection Website - Public benefit messages - The Unicom signal is full, but it takes a long time to send the short message. What happened?

The Unicom signal is full, but it takes a long time to send the short message. What happened?

1, full signal is not necessarily good, signal display has time delay change, signal may be bad when it is sent out, but it is not displayed.

2. SMS is sent by the signaling system. If the network signaling is busy, the transmission will be slow.

3. Unicom's 2G bandwidth is relatively narrow, which may be about 1/3, so it will be slower than mobile.