Untested iPhone XR 64GB logic-board sample listing for catalog and order-flow testing. Activation status, region, and function are not verified. 测试商品说明：商品图片为 AI 生成的示意图；价格与库存为测试样例。正式销售前请核实供货商、实物照片、配件版本、成色和兼容性。 Test listing: the product image is an AI-generated illustration; price and stock are sample values. Verify supplier, actual product photos, part revision, condition and compatibility before sale.