02-12-2021 08:54 AM
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Hello,
three days ago I have received the update to Android 12 on my Galaxy S21 5G and, since then, the phone is almost unusable to make phone calls
Both sims reset themselves periodically, within minutes, dropping the network and any phone call in progress.
After trying to reset the network settings, the phone has started to request the pin for the sims at each reset, so I had to disable it. Keeping one or the other sim active only isn't changing the behaviour.
The diagnostic on the phone doesn't detect any issue even if run while the network is down.
Does anyone incurred in the same issue or found any solution? The phone is 3 months old...
Solved! Go to Solution.
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17-03-2022 09:47 AM
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17-03-2022 11:37 AM
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17-03-2022 02:28 PM
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New firmware OneUI 4.1 seem resolve the problem. I will try during several days to confirm that
17-03-2022 02:56 PM
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21-03-2022 02:31 PM
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21-03-2022 04:47 PM
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Yes, I also did the One UI 4.1 update and the network problems seems to be fixed! Before when I chose 5G/4G/3G setting, the network would be lost completely at my home and in certain other areas. Now I have 5G at home and when 5G is not availible the phone switches to 4G(+) like it should! Hope it stays stable but it looks promising *fingers crossed*.
24-03-2022 10:54 PM
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I'm going to give it 24 hours, but I've got an engineer coming Monday! Will cancel if it's now rosy.
Bloody annoying it's taken 4 months to sort this though. Samsung compensation for lack of 5g?
30-04-2022 01:54 AM
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Hey buddy, you gotta tell us how to downgrade it please. I am devastated by this act of the phone and extremely disappointed with SAMSUNG not entertaining any complain.
30-04-2022 08:11 AM
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06-04-2023 03:21 AM
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You would think as much as these phones cost they would help fix them or offer a replacement of same quality no down grade i have the S21 Ultra (Galaxy) and it resets sim i only have one sim card in it my phone connection is so bad right now this just started. i had to make a phone call on my wifi service. 2 bars or no bars of service connection what is going on ? this should be fixed as much as i pay for the account this is outrageous! well thanks for sharing your issue i am glad i am not the only one suffering with these issues.

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