Backup & Cloud Storage

TeraBox: Cloud Storage Space
Dubox: Cloud Storage to Backup SyncFile upload(Free)
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Free cloud storage for Android
Xiaomi Cloud
Xiaomi Inc.(Free)
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Free cloud storage for Xiaomi devices
Contacts Backup & Restore Data
MKK Games(Free)
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Efficient Contacts Backup App with Cloud Integration
Samsung Cloud
Samsung Corporation(Free)
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Free cloud storage from Samsung
CLEANit - BoostOptimizeSmall
Super Tools Corporation(Free)
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CLEANit - BoostOptimizeSmall