Apple's mobile phone battery is only 98 in four months.

Normal. After four months of use, the health of Apple battery reached 98%, indicating that there was a problem during normal charging. Although Apple doesn't need much maintenance, it will continue to charge and discharge the battery every once in a while. When using a mobile phone at ordinary times, be sure not to play with it while charging. Remember to unplug the mobile phone when it is fully charged. If it is used below 20, it must be recharged and used correctly.