Many people will have this experience. The 6500S is placed in the leather case at the waist, and often refuses to answer the phone automatically. The automatic keyboard lock fails (automatically opens), and the screen is always on ... Everyone knows that this is caused by the magnet buckle on the leather case of the mobile phone (the specific reason is unclear, I don't know if it has anything to do with the metal case ...), but most mobile phones basically disappear after being taken out of the leather case, so there are basically no magnets at present.
The fact is that being in a strong magnetic environment for a long time (for example, being placed in a mobile phone case with a magnetic buckle for more than 1 month) may cause many strange and irreversible permanent injuries to our 6500. At present, according to the current situation of my mobile phone and the information obtained from other channels (friends around me, 6500S area of major forums, etc.). ), the possible faults are as follows:
1, the screen is always on: in standby mode, the screen is always on, and the backlight is off for a long time or not at all. This fault can't disappear by itself, so it can only be sent to customer service for repair.
2. Keyboard lock is invalid: after the slide cover is opened, the keyboard lock is invalid and cannot be unlocked. This fault is intermittent and can disappear automatically after a long time away from the magnetic environment.
3. Automatic call rejection: the outgoing call is normal, the incoming call cannot be connected, and the other party's display cannot be connected temporarily. Moreover, the missed calls and received calls of 6500 have no record of any serious faults, which affects the use. The fault is sporadic, but it cannot be completely repaired by itself. This solution can only be sent for repair. Be sure to wait patiently until the fault occurs. Customer service usually can't detect the specific reason and can only change the board.
4. Blur and color cast with a width of about 5mm below the screen are not common. Only one person reported the problem, not sure whether it was caused by magnetic field.
5. FM radio failure: After connecting headphones and turning on the radio, everything seems normal, but the radio station cannot be searched. This kind of fault is very common and cannot be repaired by itself. Customer service can't detect the specific reason, so it can only be solved by changing the board. Moreover, some repair stations may refuse to repair after testing without problems. For example, they will tell you that our phone number is good, and your geographical location is the reason why you can't find the station.
6. The most deadly and terrible thing: the signal is unstable or even no signal at all. This problem is the most serious and fatal. The cell phone signal is intermittent, and the strength is uncertain. On the main road in the city center, it has the same effect as the elevator, or even no signal at all. You can't manually search for service providers, and other functions are completely normal. This fault is still very high. Many friends who have used the mobile phone case for a long time finally have this fault, and later it is attributed to moisture corrosion or collision, but never thought that it was caused by the magnetic field. This no-signal fault is difficult to maintain. During the test, both the power amplifier and the intermediate frequency work normally, which is completely different from the common drowning machine without signal. It is estimated that the only way out is to change the board. Friends who do insurance can find customer service to replace the motherboard.
The above is the possible damage to 6500S caused by strong magnetic field. Therefore, please keep your mobile phone away from magnets, speakers, televisions, high-voltage equipment and high-power appliances at work, and never put it in a magnetic mobile phone holster! ! ! ! ! ! !