Unable to complete previous operation due to low memory.

[Sharky]

Sometimes get the message on my phone. Try closing any other apps you have running. If this doesn't help, restart your phone.

 

[oldwheels]

Not sure on a mobile app but if you can transfer the photo to a pc I open them in MS Paint (not Paint 3D) and resize the image.

Thanks. I can probably do similar on my Macbook. Will try later.