I phone 7 plus 12.4.1 over heating problems

During the first 24 hours after the update iPhone can be more warm than usual and use more battery because the system has to index.

If you still experiencing issues with overheating, bring your iPhone to Apple or the nearest Apple Authorized Service Provider to check the battery.

Even I am facing the same issue after upgrade of iOS 12.4.1 does iOS 13 will fix this issue ?? Or because of that iOS version I have to replace this battery ??