Odd behavior on my phone lately. Samsung galaxy s25 ultra

Understanding Connectivity Issues on Your Samsung Galaxy S25 Ultra: Troubleshooting Solutions

Experiencing irregular behavior on your smartphone can be both confusing and frustrating, especially when it disrupts your usual activities. Recently, some Samsung Galaxy S25 Ultra users have reported specific network-related problems that warrant a closer look. This article aims to shed light on these issues and provide practical troubleshooting steps to help restore normal device functionality.

Identifying the Problem

Users have observed the following patterns:

Difficulty downloading applications from the Google Play Store when connected via Wi-Fi using Dynamic Host Configuration Protocol (DHCP).
The problem seemingly resolves when switching to a static IP address.
Inability to access the Reddit app or website under DHCP, but access is restored with a static IP configuration.
No significant issues with the Wi-Fi network itself, which appears stable and maintains good performance.
No recent installation of suspicious apps or downloads, and malware scans (with Bitdefender and Malwarebytes) have come up clean.

Potential Causes and Considerations

Two potential factors that could influence these connectivity irregularities are:

Custom DNS Settings: Some third-party DNS services, such as RethinkDNS, might interfere with network traffic if misconfigured.
Modified App Behavior: ReVanced YouTube, a modified version of the YouTube app, might affect network interactions, especially if updates or changes were made recently.

Given that both services were functioning correctly before and no malicious activity has been detected, the issue might stem from network settings or compatibility problems introduced by these apps.

Troubleshooting Steps

To resolve these types of connectivity disruptions, consider the following steps:

Verify DNS Settings
Check if you’re using custom DNS servers via RethinkDNS or manual DNS entries.
Reset DNS to default or switch to a reliable public DNS (e.g., Google DNS 8.8.8.8 and 8.8.4.4).
To do this, navigate to Settings > Connections > Wi-Fi > [Your Network] > Advanced > IP Settings, and set it to DHCP temporarily.
Reset Network Settings
Resetting network configurations can fix IP conflicts or misconfigurations.
Go to Settings > General Management > Reset > Reset Network Settings.
Note: This will erase saved Wi-Fi networks, Bluetooth pairings, and other network settings.
Review VPNs and Proxy Settings
Ensure no VPN