1. The charger is faulty
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The simplest reason why phones charge more slowly than they used to may have nothing to do with the phone itself. Instead, you may have a bad power cord or adapter, or a weak power supply. In the same case, Zifang also recommends the use of the original priority charger, and in most cases wireless charging will be slower. USB cables often appear, especially in homes with multiple users and devices. These cables often fall, bend, stay in positions where the temperature varies greatly, and even step on them. So before anything else, replace the cable and see if you can fix the problem. Many people like to use ports on their computers to charge their mobile devices. This is not always the ideal solution, depending on the age of the computer and whether other ports on the computer are in use at the same time. All else being equal, you should use a direct source to charge your phone. In other words: Use a phone charger whenever possible.
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2. The interface is faulty
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Your wires aren't the only element that can experience problems charging every day. There may also be some damage to your phone's charging port. Check whether the interface is blocked by corrosion or dirt. While this may not be the reason it takes more time to charge your device, you should at least rule it out. To find the latter, use a flashlight to look around inside your phone's port. Remove any objects (such as cotton wool and dust) that do not belong to the port, and do not damage the components of the port
This may be caused by the aging of the data cable or charger, or the charging device. The reason why.