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How to backup your text messages?
Solution:
1. From the Home screen, tap Apps -> Messages.
2. Tap Menu -> Back up SMS -> Back up SMS.
3. Enter a name for your backup file, and then tap OK.

How to install a software update?
Solution:
When the Internet connection is on and there’s a new software update available update notification icon  appears in the status bar.
1. Slide the Notifications panel open, and then tap the system update notification.
2. If you want to avoid additional data charges, select Use Wi-Fi or cable only.
3. Tap OK.
4. When download is complete, select Install now, and then tap OK.
5. Wait for the update to finish. HTC Desire X restarts automatically.

How to add an Internet calling account?
Solution:
1. Slide the Notifications panel open, and then tap Setting -> Call.
2. Under Internet call settings, tap Accounts.
3. Tap Add account.
4. Enter your account details.
5. Tap Menu -> Save.
6. To set HTC Desire X to receive Internet calls on your added account, tap the Receive incoming calls check button.

This HTC Desire X manual / user guide is available in English. For new owner of HTC Desire X smartphone, you may need this user guide to improve your experiences while using this device. This HTC Desire X user manual comes in PDF file format with 3.34 MB in size (181 pages). Improvements and changes to this HTC Desire X user manual necessitated by typographical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made by HTC at any time and without notice.

To know more about operating instruction and troubleshooting tips of HTC Desire X mobile phone, you can download this HTC Desire X user manual.

Download HTC Desire X User Manual.PDF (3.34 MB)