It depends on what field work youdo. I have an S7 and because of the curved screen it’s hard to try to protect the screen from damaging. I Work also outside and every time I need to take the phone out of the pocket in ordered to carry out the work and try to find a safe place to not smash it but also to have if closer to be available when rings. so the size doesn’t really matter as long as you can afford it and proceed something similar when you work. this phone is totally value for money.