iPhone taking screenshots by itself

Are you using the double Back-tap feature for Screenshots?

See the pic below which shows enabling Assitive Touch on Back-tap but this can be configured for Screenshots too. Check your device

Did you find a solution to that problem? I don’t know what I do, but I touch my iphone & It takes a screenshot. But it doesn’t save it. It’s just never in my photos.

Vicpan wrote:

Im not sure if it’s a malfunction or malware.

iOS / iPadOS devices cannot be infected** with Viruses / Malware / Spyware unless you have intentionally downloaded spurious software or unauthorized apps directly from the internet and installed them on your device or/and have Jailbroken. 

**The primary reason for this is Sandboxing. All third-party apps are “sandboxed”, so they are restricted from accessing files stored by other apps or from making changes to the device. Sandboxing is designed to prevent apps from gathering or modifying information stored by other apps.

Security of runtime process in iOS and iPadOS - Apple Support

The sandbox on an iPhone is a security feature that creates a restricted environment for each app to run in isolation from other apps and the operating system. It is a core component of iOS's security architecture and plays a crucial role in making iPhones more secure.