If you are trying to upload a photo to Instagram and are prompted with 'Can't upload photos' error message, then the first thing to do is to restart your phone. Even after restarting if you get same error message, then uninstall and reinstall Instagram app on your mobile. If these two solutions do not work, then check your Internet connection.
Make sure that you have a strong Internet connection. If you have a weak Wi-Fi or cellular data signal, then you may not be able to upload photos. If you have a strong signal and keep getting error messages after tapping "Retry", then try to upload photos on both Wi-Fi and on your mobile data connection. If the issue still persists, report it to the Instagram team with details.
Quick Tip to Backup your Digital Photos
If you have treasured photographs, or you take photos of everything you like, you won't want to lose them. So, what is the best way to backup photos on an ongoing basis? In the back of your mind, you know you need to backup all of your photos. But where do you start? Here's how to backup your digital life: PicBackMan is the easiest and simplest way to keep your videos safely backed up in one or more online accounts. Simply download PicBackMan (it's free!), register your account, connect to your online store and tell PicBackMan where your videos are - PicBackMan does the rest, automatically. It bulk uploads all videos and keeps looking for new ones and uploads those too. You don't have to ever touch it.