Device Maintenance - Samsung SM-J530GM/DS User Manual

Settings

Device maintenance

The device maintenance feature provides an overview of the status of your device's battery,
storage, memory, and system security. You can also automatically optimize the device with a
tap of your finger, and ultra data saving mode helps you manage your mobile data usage.
Some features may not be available depending on the region or service provider.
Battery
Storage
128
Ultra data saving
Device security
Memory