Clean your phone from pictures and files you don't want and get more space in your phone storage.
¡Be careful! If you want to save some of them, don't delete all content. You can move any picture to other folder, like DCIM (where camera pictures are saved).
- See and save PROFILE PICTURES of your contacts and friends.(If you delete them and you check any profile or chat, it would be downloaded again).
- Delete all downloaded files from Telegram.
- Delete all images you have received.
- See a list of images and files and delete what you want.