Is there an app or program that allows others to remotely 'see' my phone, texts, photos, etc?

[AC Question]

I get the feeling someone is either spying or intercepting my texts.
Is this possible? Is there something I should be looking for on my phone, in apps, etc that would allow this?

Thanks

 

[Rukbat]

Any app that didn't come with the phone or you didn't install.

Or run the phone in Safe Mode (search for instructions for your particular phone) for a while - no installed apps run in Safe Mode, only apps that came with the phone.