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If you're developing a smartphone, IoT device, router, POS terminal, or any cellular product, understanding GSMA TAC is essential during telecom Type Approval and certification processes. TAC (Type Allocation Code) is part of the IMEI system used to identify device models across global mobile networks. It is often required in Type Approval documentation, regulatory submissions, and market access compliance. Early TAC planning helps avoid delays, documentation errors, and appr