Well, with the Nintendo Switch Voice App here, it's been received as, no surprise, unanimous negativity and disappointment. I'd like to talk about that.
In a portable setting, the need for a phone app is near inexcusable.
Phone must be unlocked at all times
For those that don't know, when a phone is unlocked, it's completely open, it's not off, and it's not on the lock screen. To my knowledge, no other communication app has done this. You spend an hour chatting on your phone, then you've just lost an hour's worth of battery life on it, even more so if the app has a larger decharge rate.
Other apps cannot be used while the voice chat is occuring
This means that you cannot use any apps while you chat. You cannot access social media, or any type of app, lest you want the Chat Application to close, essentially booting you from the lobby. I know for a fact that no communication app does this, so why can't Nintendo do what they do? I'm not one to do so during intermissions, I'd rather get some water or run circles around my room or something, but for those who don't do what I do, they're bound to be disappointed.
You'll need a headset, a Switch, your phone, and the Splatoon 2 tri-connector... thing...
It's a mess, plain and simple, and this is probably the most egregious thing about it to me: how annoying and convoluted it looks. Where are you supposed to put your phone? Your pocket? Some people say it doesn't work and recommend a grip or a stand so your phone doesn't lop around. Where are you supposed to fit all this? I don't think that the Tri-Connector can fit inside the basic-tier Switch Case without some cramming. Take a look at this picture from Kotaku's report on the app. Look at their setup. They needed a third party grip so management was less messy. I guess the Splatoon headset is ultra-snazzy, but that's not a compliment for the entire shabang, that's just for the headset.
I can't even call this primitive, it's just clunky. If they cut out the middle man and allow a bluetooth headset or anything other than this setup to work, I wouldn't be so shocked.
I'd also like to ask how this would work in docked mode, because wouldn't the setup be pointless if the Switch always needed to be connected, therefore tethering you with a 10 ft. long cord? When your solution to a problem raises more questions than answers, I can safely say that this does not work.
In Japan, where people are more mobile-savvy, this might be better with them, but for other countries, I don't think anyone's impressed with this.