These are my business tools.
Price: $200
Weight: Under 2LB
Functionality: iPhone x 100
iPhones are designed so that dumb girls can look sophisticated while check Facebook to see if they have any new likes. If they had anything important to say or had anything important riding on properly editing their photos, they'd be using a full keyboard and a screen more than 2 inches wide.
Price: $20
Weight: Negligible
Functionality: Makes calls the same as an iPhone and sends texts faster, because you aren't trying to type on a fucking screen-keyboard.
When you actually have genuine computer functionality at your fingertips, you don't need a $500 phone that is going to be useless if you drop it even once on pavement.
Price: $1
Weight: Under a pound
Functionality: Better than an iPad for sketching ideas
Do you need full creative freedom? Then you need a notebook. Nothing is better for quickly converting an idea from concept to visual reality.
All of the above business tools fit nicely into a bag just like this one, unlike most smartphones, which people have to walk around clutching like an idiot, because they don't fit into their damn pockets and their Facebook account is far too important to go unattended for more than 5 seconds.