Purple screens on Android or iPhone devices can be a troublesome issue, but several methods can be used to try and resolve it. Here are seven potential solutions:

1. Soft Reset Your Device: Sometimes, a simple soft reset can fix the purple screen. On an iPhone, press and release the volume up button, then the volume down button, and finally hold the side button until you see the Apple logo. For Android devices, hold the power button until the device restarts.

2. Update Your Software: Outdated operating systems can lead to compatibility issues, including the purple screen. On both Android and iPhone devices, go to Settings > System > Software Update to check for and install any available updates.

3. Check for App Conflicts: Some apps may not be compatible with your device’s hardware or software which may cause screen discoloration. Consider any recent apps you’ve downloaded before the issue started and uninstall them to see if it resolves the issue.

4. Factory Reset: If no other method works, consider a factory reset which will erase all data on your device and restore it to its original settings. Backup your data before doing this. On both Android and iPhone, you can perform a factory reset from the Settings menu under ‘System’ or ‘General Management.’

5. Inspect for Physical Damage: Physical damage to your phone could cause display issues. Carefully inspect your device for any signs of damage that could be influencing the screen display.

6. Cool Down Your Device: Overheating can cause screen discoloration problems. If your phone is hot, turn it off and let it cool down for a while before turning it back on.

7. Seek Professional Help: If none of these solutions work for you, it might be time to seek professional help as there could be a hardware issue with your device’s screen or other components.

By following these steps, you should be able to resolve the purple screen issue on most Android or iPhone devices.