I deleted an important text message by mistake from my iphone. is there anyway to retrieve deleted messages?

Only if you have synced your iPhone to iTunes on a computer before and have not synced it after you deleted the text messages, you can get them back. But iTunes can't help. You need to get a third party iPhone data recovery software like Tenorshare iTunes Data Recovery, which helped me recover deleted sms from iPhone 4 before.

You can get it from http://www.any-data-recovery.com/product/itunes-data-recovery.htm

Yes, there is a way to recover your iPhone SMS.

As a matter of fact, every time you sync data between iPhone and iTunes, all previous data will be automatically backed up by iTunes and stored as a .sqlitedb file, which will be updated along with the later sync continuously. But those backup files can't be viewed or taken out unless you use some software using special algorithms to extract.

Learn how to recover your iPhone data here with step by step guides.

Good luck!

As long as your deleted text messages have not been overwritten by newer data, you can use third-party data recovery tool such as Joyoshare iPhone Data Recovery to get them back. If they have been overwritten, even the professional tool cannot help you.
For more, visit here: Joyoshare iPhone Data Recovery

There are two ways to recover iPhone data - scan and restore iPhone data and extract iTunes backup to restore iPhone data . Want to restore data from iPhone, this guide can help you to solve the problem.

Recover Deleted Contacts Text Messages from iPhone SIM Card

The software iStonsoft iPhone Data Recovery which is specialized in recovering lost data on iPhone or even iPad and iPod touch. With the help of this recovery software, you can easily regain iphone deleted messages.
How to Recover Deleted iPhone Text Messages iPhone SMS Recovery

Hi, no way my friend.
cheers