When the mobile phone sends and receives text messages or calls, the TV and computer monitor will be subject to certain interference.

It is electromagnetic radiation

The mobile phone radiates a lot of radiation the moment it starts sending and receiving signals, which will cause interference to surrounding electrical appliances. Obvious examples are water ripples on CRT monitors and beeps on speakers. The beeping sound does not mean that the monitor's radiation exceeds the standard, nor does it mean that the monitor's anti-interference ability is weak

CRT uses cathode radio picture tube technology, and electrons can easily be disturbed and change their direction of movement, causing water ripples

LCD uses different technologies, so it will not be disturbed or slightly disturbed