3G Instead of 4G LTE After Call

Hi, I have a Sony Xperia XA2 Ultra H4233 64GB phone that I'm using on the Cricket Wireless network. I did a search on google and this forum but couldn't find anything specific to my issue.

The Issue

Everything works on my phone; talk, text and data. I get 4G LTE data signal. The problem comes after making or receiving calls. Even when I check my voicemail. After the call ends the phone switches to 3G data. At that point I have to go under network settings, toggle the...

3G Instead of 4G LTE After Call

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