Force a partial DSI link reset only for that line group.
: Tap on Phone diagnostics (or "View tests").
Use the to find the nearest authorized service center.
Open the app (pre-installed, or available on the Galaxy Store). Tap the Support tab located at the bottom right corner. Select Phone Diagnostics . Tap Test All to run a complete system health sweep. Using the Diagnostics Tool to Fix a Hot Phone samsung galaxy diagnostics screen tool fixer hot
When your Samsung Galaxy starts acting up—whether it's an unresponsive screen or the device is running unusually hot—you don't always need a repair shop right away. There are built-in "secret" tools and official apps designed to diagnose and fix these issues yourself.
Using these diagnostic screens can save you hundreds of dollars in unnecessary repairs. Here’s how:
Never buy a second-hand Samsung without typing *#0*# first. It’s the fastest way to see if the seller is hiding a faulty sensor or a burnt-out pixel. 4. Troubleshooting Common Issues Force a partial DSI link reset only for that line group
If you own a Samsung Galaxy device, you’ve probably heard whispers about a secret menu—a hidden laboratory inside your phone where you can test sensors, calibrate the touchscreen, and check the health of your battery.
However, if the diagnostics screen throws a hardware error, or if your phone becomes painfully hot even when turned off, turn off the device immediately. This indicates a physical short-circuit on the motherboard, requiring professional repair.
Once you've entered *#0*# and launched the diagnostic suite, you'll see a grid of colored buttons representing different tests. Here's what each test does: Open the app (pre-installed, or available on the
Heavy multitasking can max out the processor.
How to check the battery status on your Samsung Galaxy phone
Go to . Tap Optimize Now . This native utility instantly closes background apps, clears system cache, and stops hidden processes that are straining your CPU and generating heat. Check the Battery Diagnostics
Available through the Good Guardians app, optimizes your installed applications for improved performance and reduced thermal output. Running this tool weekly can help maintain optimal device temperature by eliminating inefficient app behaviors.