Hello there! I understand you're seeing the "Failed to contact server" message in Idle Heroes. Let’s work together to resolve this.

Could you please provide a bit more detail? For example:
- Are you connected to Wi-Fi or using mobile data?
- Have you recently updated the game or your device's operating system?
- Has this issue just started, or have you experienced it before?

Once I have that information, I can better assist you!

data yes just started

Thank you for the details! Since you're connected to data and this issue just started, let's try a few troubleshooting steps to resolve the "Failed to contact server" message in Idle Heroes.

### Step 1: Check Your Internet Connection
1. Make sure your mobile data is turned on and working correctly. You can test this by opening a web browser and visiting any website.
2. If you have another Wi-Fi network available, try connecting to it and see if the issue persists.

### Step 2: Restart the Game
- Close Idle Heroes completely and then restart the app. Sometimes, a simple restart can help re-establish a connection.

### Step 3: Clear App Cache
1. Go to Settings on your device.
2. Tap Apps or Applications.
3. Find and select Idle Heroes from the list.
4. Tap Storage, then select Clear Cache.
(This will not delete your game data.)

### Step 4: Check for App Updates
- Make sure your game is up to date. Go to the Google Play Store, search for Idle Heroes, and see if there are any available updates.

### Step 5: Device Restart
- Sometimes, simply restarting your device can fix connectivity issues. Go ahead and restart your phone.

If you've tried these steps and the problem persists, let me know, and we can explore further options, such as verifying if the game servers are down or contacting Idle Heroes support for more assistance. Are you satisfied with the solution I provided so far?