Hello. I bought my phone in May this year, and since Saturday ( it’s Monday now) the battery has been going down extremely fast, I’m talking like 10%/30 mins. The battery capacity is 99%, I charge it correctly and I have the latest IOS. The problems started just the other day and I don’t know how to fix it, because the phone is only 4 months old and I don’t find the reason for that. Please, I’m desperate for help.