You may be experiencing any of the following heat issues:

• Your phone feels uncomfortably warm when turned on.
• Your phone gets too hot to touch when in use.

You may feel your phone is heating up despite not being left in the sun or near another heat source. Your phone will heat up slightly as a result of normal use, but if you feel it is uncomfortably warm or too hot to touch then the steps in this article may help.

Follow these steps to reduce the performance load on the phone:

1. Uninstall any third-party battery manager or ‘task-killer’ applications.
2. Clear recent applications.
3. Reboot the device and launch minimal applications.
4. Minimize widgets used on the phone home screens.

Ensure the phone is fully updated, by following these steps:

1. Go to Settings and select System Updates. The exact path will differ depending on your phone.
   These are the three typical paths:
   
   Settings > System updates > HTC software update
   Settings > Software update
   Settings > AT&T Software Update
   
   

2. Select HTC Software Update to check for new updates.
   If an update is available, follow the on-screen prompts to download and install the update.
   If no update is found, confirm that the phone is on the latest software version by navigating to Settings > About > Software Information.

Check if the issue occurs when the phone is in Safe Mode (see How to boot into Safe Mode).
If not, the issue is likely caused by an application in use while the phone is not in Safe Mode. Most third-party app issues can be resolved by updating the app or the phone.

Follow these steps to update your apps:

1. Open the Google Play Store app.
2. Tap the Menu icon and select My apps & games.
3. Check which apps listed under Updates on the Installed tab have available updates for them.
   To update all apps, tap Update All to begin downloading and installing all available app updates.
   To individually update apps, tap the app, and then tap Update.

A factory data reset can also resolve some software issues. See How to factory reset a device.