Is there a free way to recover iMessages and messages without using iTunes?

I accidentally deleted all my chats and messages on my phone. I haven't backed up my phone in a while, like 50 days so I need a method to get them all back without using iTunes or iCloud.

iPhone 4s, iOS 9.3.1

I would just consider them gone and move on. Thats why you do backups on things you want to save.

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