u can't...

 

if they where on sd card you can get pc programs that MAY be able to recover them

 

I study computing at uni, we've been using software to recover deleted files,
if you deleted them then recover them straight away then you'll 100% get them back, but if you've been using your phone alot and over writing those deleted files... then your chance of getting all of them back will be slimmer.

Try using recuva (free software) to recover your files, you'll need to be in debug mode then mount as USB, then follow instructions from there

 

these programs only work in windows, most Linux/UNIX systems once a file is deleted its gone for good. working on the assumption android is based on Linux you might be out of luck.

tho its the file system that makes windows files recoverable so you may have a chance.

 

yes, if u've been using ur phone since u deleted them, n taken more pics etc, the chances are very slim. however, if u've not used ur phone at all, no new pics taken, u might have a chance. i used recuva once to recover a few deleted images on a camera sd card.. not sure how it'll work on android, as someone mentioned.. but give it a shot

 

I tried using recuva and it doesn't even see my phone but Windows see's it.
any ideas?

I've only had my phone a week and it hasn't been rooted.

 

Hi!

Did you connect and mount the phone before starting Recuva? I've never used it but often removable drives are only detected when a program initialises.

 

You Must Back Up It First thru Titanium Backup or any backup apps

 

Titanium Backup will only backup apps and their associated data, not user content such as pictures, music etc.

 

prevention is always better than treatment, use some cloud storage which would automatically backup your photos and videos in a cloud storage, I suggest dropbox, box or jottacloud