There are several reasons why the iPhone does not charge or the battery is reduced:
Underoutput voltage
1. The output voltage and power of computer charging can not reach the standard charging voltage and power, and the result is that the more and less it is charged, and it will have a certain impact on the mobile phone hardware.
2. Use the USB port to charge, and the USB port voltage is too low. iPhone charging rated input voltage is 100~240V 0.15A max, output is 5V 1A. Charging with the USB interface can generally be automatically variable voltage, but if the interface is not automatically variable voltage, the voltage will be low.
3 Now is generally the use of lithium batteries, lithium batteries themselves have a certain service life (mainly to charge and discharge times, normal use of up to 500 times or so, with the increase in the number of capacity is also proportional to the decline, ordinary users can generally use about two years!)
4 Charge with the charging head, but do not use the original charging head.
Solution: Do not use cheap miscellaneous chargers, the cost of such chargers is limited by the imperfect protection circuit, which is easy to cause overcharging and bad batteries, try to use the original direct charge of the mobile phone is the best)
Replace other working USB interface charging, and ensure that the data cable is the original data cable.
Replace the original charging head and data cable for charging.
Here's why Apple's phones are getting less and less charged:
1. The charger and data cable are not caused by Apple's original and genuine accessories. Use genuine accessories for charging.
2, the mobile phone above the background software is still running caused by. Close the software running background programs on the phone.
3, the mobile phone system caused by problems, restore the mobile phone system Settings.
4, mobile phone battery aging or battery broken caused. Repair the battery.
5, the mobile phone is not plugged in when charging, resulting in the failure to charge.
Here's why Apple's phones are getting less and less charged:
1. The charger and data cable are not caused by Apple's original and genuine accessories. Use genuine accessories for charging.
2, the mobile phone above the background software is still running caused by. Close the software running background programs on the phone.
3, the mobile phone system caused by problems, restore the mobile phone system Settings.
4, mobile phone battery aging or battery broken caused. Repair the battery.
5, the mobile phone is not plugged in when charging, resulting in the failure to charge. It is recommended to try the operation to test: 1. After 20 minutes of shutdown and charging, test to confirm that the charger is normal and the battery is powered up. 2. Check whether there are foreign bodies in the charging interface, such as liquid intake and debris resulting in poor contact between the charging interface and the charger. If this is the case, it is recommended to send for repair as soon as possible; 3. Replace the charging position to eliminate intermittent charging problems caused by poor socket contact; 4. If conditions allow to replace the original charger for testing, or send it to repair for testing; 5. When charging, if there is a third-party plug-in such as charging doctor installed, it is recommended to uninstall and test; 6. Back up data and restore factory Settings. If there are still problems, it is recommended to go to the local customer service center for testing and repair.
This is supposed to be an aging battery, causing the system software to not recognize the power storage. You are advised to replace the battery.