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Can you put a 4G SIM in a 5G-ready smartphone?

How to use a 4G SIM in a 5G phone: Learn if it's compatible, what features you'll get, and how to upgrade to 5G for faster speeds.

A
Written by Andy Collins
Updated over 2 weeks ago

All of our giffgaff SIMs will work on 4G and 5G networks. So you can use any giffgaff SIM in your phone.


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