Recently I purchased my first of the Samsung Note series - the Galaxy Note 8. Its the largest phone ( a phablet) and comes with its stylus - the S Pen. Using it totally changed my use of the digital approach. The difference is the convenience of the smaller hardware. I can hold it in one hand and draw with the other comfortably. Its with me all the time. Sketching from the car, in the field, doing plein air, in the dentists office or barbershop. The new S Pen and phone glass are wonderful to work with - great sensitivity and control.
Software I started with was Autodesk Sketchbook which worked well but was more sophisticated than I needed. I wanted something simpler for quick, sketches yet still complete. I have started working with Infinite Painter and am finding it more than adequate and very " handy" for the sort of sketching I am doing.
I use it for simple line sketching or creating a shape plan in value/colour using the FILL tool. I also use it in the studio for playing with ideas in advance of beginning a painting - abstracting colours etc.
|In doctors office
|Simple shapes in the field
|onsite sketch with value plan
|Waiting at the Border Crossing to US from car
|field sketch - shapes, values and colours
|On BC Ferries
|done on site Crystal Cove, Tofino
So while I rarely used the larger tablets for sketching " in the field" I now use the Note 8 all the time. Its always with me. At this point Apple does not make a phone with a stylus but rumour has it they might soon.