Doya After-Sales Service & Warranty Policy

At Doya, we are committed to product quality and providing reliable after-sales support. For any non-human-induced quality issues, we offer free replacement or repair within one year to ensure a worry-free experience. If you encounter any problems, please contact our customer service team, and we will provide you with efficient and professional support.

During the use of the oral care cup, the following situations may be considered human-induced damage and are not covered under the warranty:

🔹 External Damage: Cracks, deformations, or electronic component failure caused by drops, impacts, or excessive pressure.

🔹 Liquid Intrusion: Submerging the product in water or other liquids, leading to electronic component failure (if the product is not fully waterproof).

🔹 Improper Use: Failure to follow the user manual, such as incorrect charging, incompatible power adapters, or excessive voltage causing circuit board damage.

🔹 Unauthorized Disassembly: Self-disassembly or modification that leads to internal structural damage or electronic component failure.

🔹 Environmental Factors: Prolonged exposure to extreme temperatures, humidity, or corrosive environments leading to malfunction.

🔹 Use of Chemical Substances: Using unapproved cleaning agents, chemical solutions, or non-recommended water sources that damage internal components.

🔹 Battery Damage: Overcharging, short circuits, or using unofficial charging equipment, resulting in battery swelling or failure.

To ensure the long-term stability and performance of your oral care cup, please follow the correct usage guidelines. If you have any questions, feel free to contact our customer support team.