How to unjailbreak my iphone? - 2

I have an Iphone 4 running ios7 and its jailbroken, but i have recently not been getting notifications on snapchat because of the jailbreak, so i want to remove it. I didn't back up my phone before i jailbroke it so can't restore it from there, so how to i get rid of the jailbreak on my phone but still keep all my data and photos etc. On it?

You need to back it up with iCloud (go into settings, icloud, backups, and then make sure they're on, then back up), then you need to go to settings, general, reset, reset all content and data, and when everything's done, you can restore to the icloud backup.

You can back up all your stuff onto iCloud or to your computer and iTunes. Then you should just but in dfu mode and restore

Backup your stuff and then restore it, however, i have no idea how your jailbreak messed your phone up, i have always jailbroken my iPhone and it never messed up my phone, it is quite weird

Simply backup your iPhone before you restore it.

You can backup and restore your iPhone with iCloud and iTunes. But if you want to backup Jailbroken stuff, you need some third-party iPhone backup and restore tool, like Syncios.

Personally, I'm using Syncios. It is totally free, you may have a try.
http://www.syncios.com/free-iphone-backup-restore.html