Avoiding all the gate drama / fees
I've moved to 1. a personal-sized backpack bag (*not carry-on sized)
AND
- a small waist pack (with phone, wallet & passport, cables, battery bank, earbuds, misc small toiletries [lip balm, eye drops, travel toothbrush] which can go under my waistband / hoodie / etc to avoid the whole drama at the gate with upcharges for bags and bin access once aboard.
Many airlines, especially in Asia, have recently mandated your battery bank be at your seat - not even allowed up in a bin above you anymore - and I think this safety trend will expand to most / all carriers.
The smaller waist pack also keeps things together, avoiding loss and seat pocket yuck.
I'm not pushing one brand over another (My backpack is the - ECOHUB 16" - / my phone sling is the grey - TRAVELON Pi Phone Sling - both off of Amazon Canada) as there are many competitors, and if your needs are a larger bag, go for it, but I find learning to travel with less has really cut stress and costs.