Q: Where do you ship from? A: We ship directly from Shenzhen, China to customers worldwide. Q: How long does delivery take? A: Delivery time depends on the destination and shipping method:air transport Usually 7-20 business days. Q: Are products tested before shipping? A: Yes. All products are tested before shipment to ensure quality. Q: Do replacement parts include warranty? A: Warranty depends on the product category. Please contact us before installation if you have any questions. How can I contact customer support? For help, send us your phone model, requested part, and order details through our contact channel.