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Nov Update Keeps Removing Custom DNS Setting?!

(Topic created on: Saturday)
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Recon0xe
Pioneer
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Updated to latest November 2025 BYK3 and it removed my custom DNS settings and was set to Automatic.

Reinstated Custom DNS, the next day I am seeing ADs all over the place again, checks DNS setting and it's switched back to Automatic and my Custom DNS removed again.

Anyone else with this issue?
S25U
14 REPLIES 14
Tourbillon De La Vie
Samsung Members Star ★★
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Recon0xe
Pioneer
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Thanks
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bradleymcooper
Journeyman
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Yep, I have the same issue, I hope this is not a new feature?.

smeders
Apprentice
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Thank god I'm not the only one. Thought my phone was the issue! S23U but on the October update
Elliottsix
Pioneer
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Happening here since update. Galaxy S25 Ultra. Any type of restarts wipes dns url and sets back to Automatic
Sotos35
Student
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I have the same issue from the last update on my S25 ultra

Recon0xe
Pioneer
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I thought it was on device restart, but I think it's just resetting every night without device restart on my device, I can usually tell because on a device restart, a few other things reset like esim update and energy wireless alarms etc, I check those and they haven't reset but the DNS has.
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DragonWolf5589
Pathfinder
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Same problem and I'm getting sick to death with it! (does it every time i walk about at work when it changed to different hotspots at work or switches to data then WiFi and I need it at work for the security apps so don't have to do my passwords and 2fa every 5 minutes)
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Main device: Galaxy 1TB S22 ultra
Other Devices: Galaxy watch 4
Old devices I miss: s20+
Members_JwCaLgr
Student
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Happens randomly on my S25 Ultra during the day ( no reboot ).