Iphone 4s can i retrieve deleted tex messages

You can if the messages are in the backup. You need to restore the backup in order to get them back. Remember that you will restoring the phone to the condition that it was in when you took that backup, so you will lose any recent data and settings that you aquired or changed since the date of the backup.

Restore your device from an iCloud or iTunes backup - Apple Support

If you have ever backed up your iPhone via iTunes or iCloud, you can restore iPhone from the backup. iTunes and iCloud allow you to restore iPhone SMS, contacts, calendars, notes and settings directly from iTunes backup. After that, all of your iPhone data will be replaced by the old data in your backup folder.

Refer to this guide:

http://support.apple.com/kb/ht1766

To recover iPhone without backup, or if you only want to get your text messages back, you may have to turn to some third party software for help. Even if you don’t have any backup files, they can help you find your text messages back with ease.

Refer to this guide:

How to Recover Deleted Text Messages on iPhone