S23 Ultra - some apps are not working using wifi

[Members_3y4oTLd]

Since December 2024 a number of apps on my S23 Ultra no longer work on wifi. If I turn my wifi off and use mobile data they are fine. All other apps work fine.

[Tourbillon De La Vie]

Like what apps are not working 

[BandOfBrothers]

Hello 👋 and Welcome to the Samsung Community Forum. 

It might be worth clearing the cache of the problem apps via long holding down on the app icon and tap on i, and then tap on Storage and Clear Cache. 

A more broadsworded approach is >

• Clear Cache Files from the phone's System Partition Section  > https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop or use a Tv's USB Port to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too { Possibly excluding the s²⁴ Series of phone's } 

Also double check all relevant preference settings too @Members_3y4oTLd 

If you perform a forum search you may find existing threads with some further help or guidence within.  

i.e

https://eu.community.samsung.com/t5/galaxy-s24-series/no-wifi-on-some-apps 

From the US Forum https://us.community.samsung.com/t5/Fold-Flip-Phones/Some-Apps-not-working-on-Wifi 

A Google Search. 

If some apps on your Samsung phone in the UK aren't working on WiFi, it could be due to several reasons including: issues with your router settings, app permissions, network restrictions, outdated app versions, or even a problem with your phone's network settings; try restarting your phone and router, checking app permissions, updating apps, and verifying your WiFi network settings on your router. 

Here are a few things to check:

• Check your router: Ensure your router is functioning properly and not overloaded with too many connected devices. 
• Check WiFi band: Try switching between 2.4GHz and 5GHz bands on your router to see if that resolves the issue. 
• App permissions: Make sure the problematic apps have the necessary permissions to access your network. 
• App updates: Check for app updates in the Google Play Store and install any available updates. 
• Restart your phone and router: A simple restart can often fix connectivity issues. 
• Clear app cache and data: Go into your phone settings, find the problematic app, and clear its cache and data. 
• Check for network restrictions: Some networks might block certain apps or services. 
• Check for network settings: Verify that your phone is connected to the correct WiFi network and that the settings are accurate. 
• Safe Mode: Try booting your phone into Safe Mode to see if the issue persists. 
• Contact your internet service provider: If the problem persists, reach out to your ISP to check for any network issues.