I have a note 20 ultra and I have mobile network connection problems very slow to connect. I have all the bars and the 5G connection and can have a 70 to 80 dBm signal strength but still takes a very long time to connect and start loading data. I have had the phone since December and only about 3 times have I had speeds about 200 to 400. I live in Houston TX on T-Mobile. I bought my phone from Samsung unlocked
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