Snaps are blurry? Makes me so frustrated

So every time I post a snap, it's so blurry. I take high resolution pictures with iPhone SE and it's just fine when I save them to my memories/camera roll. However, when I post from memories and NOW EVEN automatically, it's so blurry and it's making me frustrated. I tried everything from cleaning my lenses, reinstalling Snapchat, no solution. It used to be just fine whether I post snaps/videos automatically or even from memory. Please help.

I also feel like the pictures I take from my own camera are a tiny bit less clear. I have about 1500 photos in my camera roll and I read once that alotta storage could be the problem.

I sent an email to Snapchat, no response.

Added (1). Guys, I'm talking about the app SnapChat not a camera, just SnapChat. I have IOS 9 I think and have never updated my phone. My friend says that's the problem? I don't know

Thank you for all the answers though, BUT I still need help!

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It's the same whether you use your phone or camera? The problem is you. Stay perfectly still with the exception of your trigger finger when taking a shot and discipline yourself to shoot only when lighting is ideal.

Perhaps because there's insufficient light source and the shutter speed slows down to compensate; slow shutter speeds cause the camera to capture the minute body/hand motion that causes blurry images. I would have suggested defective focusing but since you have the same problem with 2 different cameras, then the fault is the common denominator: YOU.

I have a suggestion that MIGHT resolve this but I doubt you'll be interested in following up. HOW about if you sign up and take an organized, bona fide Beginners' Photography class? This way, you learn the very basic fundamentals of photography, the Trinity of Photography: aperture + shutter speed + ISO setting, and understand how to use light to get a good or acceptable exposure, learn how to avoid difficulties as the one you're experiencing right now so you can get greater enjoyment in photography, and you'll improve your skills to impress you family, friends and the viewers of your photos. And you'll have this skill for the rest of your life.

Post a link to one of the photos on a free photo sharing site like Flikr, then we can help you fix what you're doing wrong.#

What about editing one of your photos in one of the free photo editors like Gimp or www.Irfanview.com and saving it resized to the exact specs that Snapchat demands?

You have to hold the camera steady.

Update your phone. IOS 11.0.2 was just released.