In theory, unless the user unplugs the battery and removes the SIM card at the same time, it can avoid being tracked. For some all-in-one machines that cannot be disassembled, even if the machine is turned off, there is a possibility of being tracked. Simply unplugging the SIM card will only improve the The difficulty of tracking.
Simple questions are simple and simple. Below we have an in-depth study of this issue, interested friends can continue to look down.
Consumer-grade mobile phones are just three types of ordinary mobile phone positioning methods.
1 Base station positioning: The mobile phone needs to communicate with the base station to be connected to the network. In order to recognize the mobile phone, the base station needs the mobile phone to provide the unique identification code of the body. In order to be able to charge the mobile phone (some people will say that they want to encrypt, but in fact, the domestic network basically does not use the SIM card for communication encryption), the mobile phone has a SIM card, and the SIM card has a unique identity code for charging, this code corresponds to To the phone number. As long as you know which base station has contacted your phone, your location is limited to a small range. This kind of precision is about a few hundred meters, which is roughly accurate.
2 GPS positioning: high precision, can be accurate to 10 meters or even a few meters, need mobile phone hardware GPS template support, now the general mobile phone has this template.
3 WIFI positioning: a new positioning method, large software companies now have this technology. The position is calculated by the Wi-Fi hotspot, and the multi-user indoor positioning is accurate. (This is why now with some permission management tools to prohibit some software positioning, they can still roughly locate your position, which is calculated by signals and Wi-Fi hotspots.
As far as the current consumer mobile phones are concerned, no mobile phone will be designed to be connected to the network in the off state, so many people think that the shutdown state is absolutely safe. This is not the case. There are many tools and even software that can be used to "reform" a mobile phone so that it can be networked in the "off" state. Many private detectives use this type of software to track down targets. In fact, this kind of software is not as magical as the legend. The main implementation principle is to seize the power of the switch. When you turn off the software, the software will fake the illusion of shutdown. In fact, if you do not remove the battery, the phone is still on. The network is still connected.
Of course, this is only from the software level. If someone removes your mobile phone and makes special modifications to the hardware, then even if there is no software to disguise the shutdown, the battery will not be deducted. Under the battery power, your mobile phone will still be track.
Because the mobile phone only tries to register the network when it is turned on, to register the network, it is necessary to contact the base station first, so that the base station knows the mobile phone, and then it will judge whether there is a SIM card and whether it can register on the network. There is no SIM card to ensure that you can't find the phone directly by listening to the number, but you can find out where your phone was turned on by simply checking the ID of the phone associated with the number.
Base station positioning is generally only ground positioningMany people may ask, if it is really so cattle, why there will be flight loss, because it is basically impossible to locate on the base station on the flight, and the base station positioning is generally ground positioning. Some of the crashed flights are not in the sky after the crash, but the signal will also be affected by some objective factors, or the explosion will cause the phone to be damaged, or the signal into the sea, or enter the signal blind zone, resulting in a search.
Are ordinary users' mobile phones tracked?Everyone should understand that in general, for ordinary users, no one wants to deliberately track you. If you want to achieve location tracking, it is not simple. GPS positioning requires hardware support and requires battery. Power supply, after the consumer-grade mobile phone is turned off, even a deep sleep state is not enough to support GPS positioning. Wi-Fi positioning, after shutdown, can not be connected to the network, so it can not be located. As for the location of the base station, although there is no limit, it is necessary for the operator to cooperate to be able to call the data. If it is not for the state agency to conduct advanced tracking, it is difficult for ordinary people to track others in this way. Therefore, as long as you are not taking one Mobile phones that have been specially modified have not been tracked by state agencies, so you don't have to worry too much.
This is a comment from a netizen:
Finally, let's add the software tracking we mentioned earlier. This is the most common tracking method in daily life. Because everyone uses the differences in mobile phone habits, it is difficult to determine whether such software is installed, but everyone can easily Determine whether the tracking software is installed. Generally speaking, the running time of such software is to call GPS and network. The power consumption in the shutdown state will be higher, so if you find that your mobile phone is off for a while. After the time, the power is found to have obvious loss of power, or the conventional use of the mobile phone but the traffic consumption is obvious, it may be recruited, it is best to check.
Of course, no matter how clever the way of judging, it is not as effective as paying attention to the process of using the mobile phone. We should have a good habit when downloading and using the software, see the software permissions, and then decide to install, so that we can The source eliminates this malware.
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