If your battery becomes inflated, this is a very bad sign with lithium batteries, because it means that the lithium is released. In the worst case, acid or caustic solution is released and can lead to a battery explosion. Now the question is, what should we do about this? If you notice that the case is just a short distance to close or notice a dent in the battery door, you should act immediately and remove the battery from your phone. Next, contact the customer support from your manufacturer. Many manufacturers supply a new battery free of charge. Of course, you can also buy a new battery and insert it directly into your smartphone – the decision is up to you. If you cannot open the battery cover yourself, it is recommended to go directly to the nearest mobile phone shop in your area.