About the Importance of SD Cards
Regarding the SD cards used alongside Qubii for saving our valued customers' data,
Maktar recommends purchasing SD cards with quality assurance from official distributors of each manufacturer or major electronics retailers.
There have been cases where using low-quality SD cards has resulted in data corruption or loss.
For details on how to choose an SD card to use with Qubii, please refer to the following guide:
→ How to choose the right SD card and capacity for use with Qubii.
About the Importance of Cables
When using the Qubii series, backup data is transferred in the following order:
【Smartphone → Qubii → SD Card】
Note: Inexpensive cables often lack sufficient durability testing and are sold with varying quality standards, leading to a higher likelihood of connection failures.
Such cables may even damage your smartphone or connected device, and can cause electrical leakage or short circuits.
Additionally, when backups are made using these cables, issues such as grey lines appearing on backed-up images or data turning completely black and becoming unreadable have been reported.
Therefore, when using cables with the Qubii series, please keep the following in mind:
For iPhone Users
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Always use an Apple genuine or MFi-certified USB power adapter and cable (or if unavailable, a product with a quality guarantee).
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The cable must support both charging and data transfer.
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We cannot guarantee proper operation if you use other products. (If errors occur, and you have access to other chargers/cables from family members, we recommend trying another Apple genuine or MFi-certified charger and cable.)
For Android Users
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Use the original charger and charging cable that came with your device.
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The cable must support both charging and data transfer (not just charging).
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If no accessories came with your smartphone, please use a product from the same manufacturer or one with a quality guarantee.
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We cannot guarantee proper operation if you use other products. (If errors occur, and you have access to other chargers/cables from family members, we recommend trying another genuine charger and cable.)
【How to Check】
You can check with the seller or connect your smartphone to a PC using the cable.
If the PC recognizes the smartphone, the cable supports data transfer.
If your device's cable is an integrated charger-cable type and cannot be used with Qubii, we recommend using a durable cable from a major, reliable manufacturer.
About the Importance of Chargers
For iOS Users
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Always use an Apple genuine or MFi-certified USB power adapter.
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We cannot guarantee proper operation if you use other products.
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For iPads, always use an iPad-specific USB power adapter.
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The Apple genuine 5W adapter is only suitable for the iPhone mini.
For Android Users
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Use the USB power adapter that came with your device.
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We cannot guarantee proper operation if you use other products.
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If your USB power adapter and cable are integrated and cannot be used with Qubii, we recommend selecting a USB power adapter from a major manufacturer.
Recommendation to Use Wall Outlets
Regarding the use of extension cords (power strips), bed frame outlets, and adapters:
While previous usage history does not necessarily cause errors, many extension cords, bed outlets, and adapters do not meet quality assurance standards.
Even if charging seems fine, they may not meet backup quality standards.
Thus, we highly recommend connecting directly to a wall outlet when backing up.