Why my 4G bar is flickering?

[Android Central Question]

After buy the S20 FE new in box i have this issues with low and good LTE signal. I lost the network suddenly, not happen with 3G or 2G.

 

[B. Diddy]

Welcome to Android Central! What's the exact model of your phone, and which carrier are you using? Are you certain your model supports all of your carrier's 4G bands?

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