My issue isn't that TriComBadge integrates multiple functions:I refuse to believe these comm badges are also tricorders, PADDs, and personal transporters. A cool concept, but absolutely ludicrous. The computational power, as well as the energy needed to break a body down and reconstruct it, not just once, but numerous times in succession, housed in that little metal oval, really stretches credulity. Even by Trek standards. Flame me if you must, but also give me some hypnotically convincing technobabble to sell how it works. Please!
Comunicator <- Seen in TNG Era
Tricorder <- The Tricorders Hand Held Sensor was fairly tiny, 800 years of innovation can fit the sensor into a tiny foot print.
Real Life miniaturization of sensors has already happened, see SmartPhone tech and all of it's sensors. Range is still limited.
Holographic UI Projector and Gesture sensor <- Holographic Projection should be at that point by 32nd Century
PADD <- is just a Tablet / Small Computer interface, replaced by the Holographic UI
Personal Transporter <- If it's just remote accessing the Ships Transporter and giving it commands, I have no issue.
If it's functioning at super long ranges WITHOUT the Ship or a Full Blown StarShip level Transporter, then I call BS.
The power to transport that far from Orbit to Planet without the backing of a StarShip level Transporter breaks the immersion factor.
The Emergency Transporter Unit from ST:NEM had a range of tens to hundreds of meters only and it was one way, but even with 32nd century tech, I can only see the Transport of up to 100 km at most for total distance transported given how tiny the energy supply is.
But that's more than enough for local spelunking.
Even if it was a "Folded-Space" transporter, there has to be some practical limit without a larger power source.
Personally, I think "Folded-Space" transporter would be a easier method of teleportation since you don't have to break down the target at a molecular level and reassemble them to move somebody or something. I'm sure they've come up with a solution to protect against cellular damage by the 32nd century.