Netizens say that modern people's sense of security comes from mobile phones. Mobile phones have entered every aspect of our lives, so let's learn some common sense about mobile phones with Xiaoyi today!
1. Can 4G mobile phones use 5G networks?
No, you must use a 5G mobile phone to access 5G network or use 5G services.
Second, is it fully charged when battery is 100% charged?
Not really. As a general rule, charging a mobile phone should go through three stages: fast charging, continuous charging, and trickle charging. Fast charging can quickly bring battery to 100% capacity, but this does not mean that battery is fully charged, and then battery will be saturated through last two stages of charging.
3. Can I use wired and wireless charging at same time?
No. Currently, there is no mobile phone that can do both at same time, firstly, it is not secure enough, and secondly, it is not needed in everyday life. If we use two charging methods at same time, device and system will choose charging method themselves~
4. Will update system change map?
The system update causes mobile phone card to be replaced in following two cases: First, mobile phone takes up more memory after system update, which makes mobile phone's memory insufficient and causes card to be replaced. Secondly, mobile phone version is too low, and configuration can no longer match latest version, so mobile phone will replace card after system is updated. Thus, updating small version is harmless to mobile phone, but updating large version should be judged according to use of mobile phone.
5. What is principle of counting steps in a mobile phone?
There are three common methods for counting steps with a mobile phone: first is using acceleration sensor in a mobile phone, which detects change in our position and speed when walking, in order to calculate number of steps taken. Second, use gyroscope to detect angle of mobile phone, estimate displacement of human body's center of gravity, and calculate number of steps taken. Third, use a piezoelectric ceramic material acceleration sensor, which can detect speed and position of change when walking, to change voltage to count steps.
6. Why does my mobile phone always get warm after use?
Because when mobile phone is working, processor is constantly processing operations, and at same time, battery is constantly being discharged, which causes surface temperature of mobile phone to rise. This will likely become more noticeable as phone is used for longer. Do not play with phone while charging, avoid using phone for a long time, avoid using phone in a high temperature environment, etc., which can alleviate phone's overheating problem!