尼日利亚采购需求：手机信号增强器、批发移动信号增强器、手机信号增强器、手机信号解决方案、信号覆盖、光纤数字中继器

I'm looking to source a specific high-end smartphone in black color. Please provide your best pricing options, along with MOQ and lead time for delivery. Additionally, let me know about any warranty or after-sales services you offer. I'd also appreciate detailed information on the specifications and any available accessories. If you have multiple shipment options, please include that as well to help me make a well-informed decision. Looking forward to your prompt response!