I'm currently a PAYG user on three on my iPhone 5S, I seem to have found a better PAYG add-on package at GiffGaff, as I would top up £10 bundle. I'm wondering I have ordered a SIM from GiffGaff but I haven't opened it yet or activated it. I wish to transfer my Three number to GiffGaff.
1. Would I top up the giffgaff SIM and purchase the bundle and then request the PAC from Three?
2. When I request the PAC from Three, does that mean my number would no longer would until I add the number to giffgaff?
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