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I'm on Three with an S20 FE and have noticed it doesn't seem as good getting mobile signal now I've upgraded. There are places music streaming buffers where it never used to when I drive about. My guess is the same - it's not establishing a connection to 2G/3G as quickly when LTE goes.
The recent update on Jan 19, 2021 messed up the data connection of my S20 FE. After the update, the Mobile Data Button disappeared. I have no data connection any more. Went to my mobile service provider, was told the IMEI number of my phone is not compatible. What the hell?! I was using this phone since last November with the same SIM card. After the update, it just all of sudden is no longer working with my cellphone provider. What's included in this stupid update? Now I am concerning to update this phone any more. Who knows what the software updates will kill!
Anyone has similar issue?