We'd like to give you an overview of the mobile phone industrial chain in terms of components & elements, supplier chain, related industry knowledge and market classification in the hope of
helping you acquire an overall idea of mobile phone business.
•GSM --- 2.5G
•EDGE --- 2.75G
•HSPA --- 3.5G
•LTE (FDD/TDD) --- 4G
•IMEI --- GSM/TD-S/WCDMA
•MEID --- EVDO/CDMA
•Short for International Mobile Equipment Identity, which is composed of 15 digits.
•Each mobile phone will only correspond to one IMEI over the world.
•MEID (Mobile Equipment Identifier) is identification code for CDMA.
•Self-Build After-Sales System
•Third-Party After-Sales Service
•Specified After-Sales Service
•United After-Sales Service
•Children and elder people
•Such as police, fire-fighting, transportation etc