According to Apple Insider reports earlier this month quoting tech analyst Ming-Chi Kuo, Apple plans to launch a second-generation Apple Watch later this year with GPS and barometer. Kuo mentioned that he expects LTE support to arrive in a 2017 revision of the Apple Watch.
Then the question arises that, if the iWatch go like this way, would it be an adequate replacement for iPhone?
It depends on your definition of “phone”.
The iPhone was a Trojan horse for so many uses outside conventional voice calls that many of us use it in that mode quite rarely. Texting, Snapchatting, Slacking, tweeting, Facebook messaging have all impinged upon voice calls, for lots of reasons, including no longer having to finding a quiet place, coordinating a time, or worrying about being overheard or disruptive.
Using the Apple Watch to place voice calls through its tiny mic and speaker is doable today, although a bit awkward.
With a cellular radio and a paired Bluetooth headset, it can work quite well – as long as your conversations are brief – given the small battery. (I regularly work with emerging wireless tech including cellular radios small enough to embed in wearables.)
So yeah, it could work as a “phone” in a limited fashion.
By linking to a bluetooth headset the Apple Watch would be a fine phone. You can use Siri to pull up phone numbers to easily dial. The screen is fine to see who an inbound call is from.
You would be able to use your activity trackers and other apps requiring a GPS like the golfing app I use which would be a positive.
The difficulties of the iWatch to attain a superlative position would be