Poor signal/reception after updating to UI 7

[Members_U9C5f7h]

Hi everyone, after upgrading to One UI 7 I am facing severe issues with my signal/reception in one of my two Sims, although I had no issue before.

I have practically no signal and this is very frustrating as I cannot communicate with my home country.

It seems that this is becoming a common issue, at least for S23, as there is already a relevant thread in reddit: https://www.reddit.com/r/oneui/comments/1kgspys/mobile_network_performance_after_one_ui_7/

Any thoughts on that?

Many thanks!

[johnz237]

Hi! Welcome to the Samsung Members community!

I don't quite see how it's even possible to remotely affect the signal, unless something went wrong during installation.

Have you attempted any troubleshooting methods?

[GoanGeek]

Hi. Try taking the Sim out restarting the phone and putting the sim back and restarting your phone again.

Also make sure your Sim APN settings are correct and not changed.

[Members_U9C5f7h]

Hi, and many thanks! I've tried all of these several times but neither worked. Next step could be to reset the mobile network settings for this Sim but as this one is on roaming I am not sure that it will get the right settings afterwards. Also, others reported that they have tried this and didn't work...

[Members_U9C5f7h]

Hi, and many thanks! I've tried reinserting and swapping Sims, restarting the phone several times, checking the APN settings but nothing worked. Next step could be to reset the mobile network settings for this Sim but as this one is on roaming I am not sure that it will get the right settings afterwards. Also, others reported that they have tried this and didn't work...

[GoanGeek]

You can always manually add your ApN settings as long as you get the correct ones from your provider

[dissapointed11]

This is very common!! Mine is the same and it has stopped me being able to use my phone. My happend in the update before go check out my thread loads of people are going through the same thing!!

[rodpmaga]

Im having the same problem. Galaxy S23 ultra and no signal when indoor. It shows that i have 5g signal 2 or 3 bars and no one hears me in calls, sometimes i try to open a webpage and it says im offline. 
Tried resetting network settings, removing and reinserting sim card, reseting phone, its broken ever since upgrading to One UI 7

[Sharingan007]

Hello all,

 I have updated to one you one ui 7 post which I am facing an issue with network for sim card one only. 

I have two sim cards both are of the jio. 

Suddenly my network goes while middle of the call and says no network available just like sim card got disabled and after few seconds again network come back and SIM card gets enabled.

[Mothiba89]

I have the exact same issue. I'm using the S24. Since the update. Both sim in my phone (1 is a physical sim, the other an eSim) have no reception. And the signal bars seem to mimic each other. They always show the same signal even though they are on different networks. They usually show 1 or 2 bars if im lucky, but very seldom more than that. And this started literally a day after i did the update.

And i know they messed with the coding there because there were some cosmetic changes does to the singal area so I'm not sure if they messed up something or what.