Solution one: Backup/restore HTC text messages

How to backup your text messages for HTC One X/S/V?
HTC One X, HTC One S, and HTC One V users can backup your text messages according to below simple steps.
1.From the Home screen, tap  >Messages.
2.Tap  > Back up SMS > Back up SMS.
3.Enter a name for your backup file, and then tap OK.

How to restore your text messages for HTC One X/S/V?
You can only restore text messages that are exported using the Back up SMS feature.
1.From the Home screen, tap >Messages.
2.Tap >Back up SMS > Restore SMS.
3.Tap the backup file to import.
4.Tap OK.

Solution two: Backup/restore/edit HTC text messages

Use AST Android SMS Transfer, you can backup, restore, and edit SMS for all HTC Android phones. Install and run AST Android SMS Transfer on your HTC phone, you are allowed to backup the text messages in .db file format in the SD card. If needed, you can restore the .db file that stores your important SMS to your inbox again. Need to backup the HTC SMS to your computer? Launch AST Andorid SMS Transfer program on computer, transfer and import the .db file from your HTC Android phone to PC, and export the text messages in txt or csv file format. Free to try the smart software by downloading the .zip file.

Backup/restore Android SMS for HTC One X, HTC One S, HTC One V

More HTC Android phones are supported by AST Android SMS Transfer?
Not only for HTC One X, HTC One XL, HTC One S, HTC One V, AST Android SMS Transfer also support text messages transfer for HTC Desire, HTC Incredible, HTC Wildfire, HTC EVO 4G, HTC Desire HD, HTC Inspire 4G, HTC Incredible S, HTC Droid Incredible 2, HTC Merge, HTC Sensation, HTC ChaCha, HTC Salsa, HTC EVO 3D, HTC Raider 4G, HTC Vivid 4G, HTC Velocity 4G, HTC Rhyme, HTC EVO Design 4G, HTC Hero S, HTC Amaze 4G, HTC Explorer, HTC Sensation XL, HTC Rezound, HTC EVO 4G LTE, HTC Desire C, HTC Droid Incredible 4G LTE, HTC Desire V, HTC Desire X, HTC J, HLT21, etc.