Digi Postpaid subscribers on the Digi Postpaid 60 plan and above are eligible to sign-up for the Gadget SIM lines. Each eligible Principal Postpaid line can sign-up for up to six (6) Digi Gadget SIMs (calculated in combination with other supplementary Digi Prepaid, Digi Mobile Broadband and other Digi Gadget SIMs under the same Principal line).