Large APS-C (23.5 x 15.6 mm) sensor
Large sensor in Nikon D3500 ensures a good low light image quality compared to smaller sensor, and it also provide shallow depth of field and a nice blurry background when needed.
Even the smallest lens attached to this body will be a burden to carry everywhere with you. 365g
Carrying this weight all day may not be very comfortable for you. Body Thickness 70mm
With a thickness of 70mm,Nikon D3500 is not a pocketable camera for sure.