Phone turns off when trying to delete text messages?

You can try GT Recovery for Android !
Can you retrieve deleted text messages on Android? Yeah, this video will show you the full guide for Android text message recovery. Don't hesitate and recover deleted text messages from Android 4.0, 4.1, 4.2, 4.4, 5.0, 5.1 and more versions right now!
Not only can you recover SMS messages from Android backup but also can recover Android SMS messages without backup. This video is showing you how to recover deleted sms messages from Android.
Some common situations that lost text messages you can recover from:
1. accidentally deleted texts on your android phone
2. lost text messages after Android 5.0 updated or other Android upgrade.
3. save text messages from water damaged, crashed, broken or smashed Android phone
4. Android deleted text messages randomly by itself
5. Factory restore Android phone.
And more...
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Download Link: http://www.gtrecovery.net/

Can you retrieve deleted text messages on Android? Yeah, this video will show you the full guide for Android text message recovery. Don't hesitate and recover deleted text messages from Android 4.0, 4.1, 4.2, 4.4, 5.0, 5.1 and more versions right now!
Not only can you recover SMS messages from Android backup but also can recover Android SMS messages without backup. This video is showing you how to recover deleted sms messages from Android.
Some common situations that lost text messages you can recover from:
1. accidentally deleted texts on your android phone
2. lost text messages after Android 5.0 updated or other Android upgrade.
3. save text messages from water damaged, crashed, broken or smashed Android phone
4. Android deleted text messages randomly by itself
5. Factory restore Android phone.
And more...

You may delete all of the text messages while you just need to delete one of them. Via Renewandroid Recover files android you can retrieve messages, and other data like contacts, photos, call history, notes.

How to Restore Lost SMS from Samsung

Don't add new data or delete the existed files in your phone, so the Android data will not be overwritten.

How to Solve Samsung Galaxy S6 Black Screen Problem

you can use a file recovery program to recover deleted text from phone. I had success with this program called asoftech data recovery, you may find more info from
http://www.asoftech.com/adr/index.html

I had this same problem. Deleting and clicking "yes" at the warning screen would not remove the message from my outbox and the message kept resending for days.

Solution: In the Outbox, click "Menu" > Empty Deleted Items. Click "yes" at the warning. The message should now be gone from your outbox and your text buddy should now be able to regain sanity.

T-mobile credited back the resent text messages when I called them.

sometimes on my Env when i am trying to delete my text messages the "okay" button will not work. this happens only when i am trying to delete a text message. the solution i have found is quite simple. just turn the phone off completely and then turn it back on in a few minutes. if this does not work then try removing the battery when you turn the phone off. this always seems to make the button work and i am able to delete the messages.

I had the exact same problem and it did help when I deleted all my received texts. I started having the problem when I had more than 400 text messages stored in my phone.