A SIM card that was activated in a 4G device will still work with a 5G device , but you may have trouble connecting to the 5G network. Check with your carrier if you’re not seeing the little 5G logo pop up on your screen and you think you should be.
Read moreCan I change my current SIM to 5G?
Most operators will require you to change the existing SIM to access 5G network . But many operators have already provided subscribers with 5G-ready SIMs. If your SIM is 5G-ready, you can leverage key features of the 5G network – ultra low latency and optimal speed – without replacing the existing SIM.28 Şub 2018
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