Turning off your phone completely can reduce the radiation emitted by the device, but it's important to note that the radiation from cell phones is not ionizing radiation and is generally considered to be safe for normal use.
When your phone is turned on and actively transmitting or receiving data (such as during a call or data connection), it emits radiofrequency (RF) radiation. This type of radiation is a non-ionizing form of electromagnetic radiation, which is different from ionizing radiation that can damage DNA or cells.
When you turn off your phone, it stops actively transmitting and receiving signals, thereby reducing the RF radiation emitted. However, it's worth mentioning that even when your phone is in standby mode or turned off, it may still emit minimal amounts of radiation for functions such as maintaining network connections or receiving updates.
If you are concerned about potential exposure to RF radiation, you can take additional precautions such as using hands-free devices (e.g., Bluetooth headsets) or speakerphone mode during phone calls, keeping the phone away from your body while in use, and limiting the duration of phone calls. It's also advisable to follow guidelines provided by regulatory authorities regarding safe usage of mobile devices.