What should I do if my iphone xr phone stops charging to 76?

In this case, the battery loss is too serious. It is recommended to replace the battery. If the battery health of Apple mobile phone is below 80%, it is necessary to consider replacing the battery. If it is officially exchanged before the warranty period, the price is expensive, but the quality is guaranteed. After the warranty period, I will go to Taobao to buy regular batteries of big brands, such as Scud, Pinsheng and so on. Then go to the mobile phone repair shop to replace it, so only one manual fee is needed. Affordable.