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Hello, recently I noticed that my iPhone X was always low on battery power (although battery health showed 87%). This led me to finding out that my iPhone X occasionally loses cellular connection and reconnects back. This happens quite a few times during the day so the battery drainage was huge. Then the connection drops started to become more frequent enough so that it was almost impossible to surf the web or use any app while on cellar connection. Sometimes when I was talking on the phone, the connection was lost, so the phone was giving “Call Failed” error and a loud noise could be heard from the speaker. I recently had my battery changed and the repair shop attempted to fix the issue (they thought it was an antenna issue) but the problem still remains. I have tried updating the iOS, resetting the network setting and I even had a complete factory reset, still hasn’t been fixed. Does anyone know how to fix this?