The difference between the operator's customized version and the full Netcom version: 1. The full Netcom version does not have the operator's trademark 2. The customized machine has a back cover and boot 3. The full Netcom version has nothing to do with communication operators 4. The customized machine is communication The operator asks the mobile phone manufacturer to customize the production. 5. All Netcom can use China Telecom, China Unicom, and China Mobile. 6. The customized phone can only use one of them