How to Verify a Phone Farm Box Supplier Before Bulk Order

**Red flags** No sample path, vague specs, no warranty terms, refuses video call or AnyDesk demo, cannot explain ROM scope or burn-in QC. **Green flags** Written carton size/weight/voltage, factory photos on request, slot-level burn-in, FRP-unlocked boards, export packing experience, remote setup offer. **Questions to ask** 1. Exact nodes per box and power draw? 2. USB vs OTG/LAN recommendation for my scale? 3. Warranty on chassis vs boards? 4. Lead time for my quantity? 5. Packing weight for freight quote? Guangzhou Phone Farm checklist: /phone-farm-buyer-guide · Quality: /quality-assurance · RFQ: /contact