You can get WiFi on your HTC One by simply going to Settings and doing the software update.
no
Yes it can connect via WiFi, bluetooth, wireless data 4Glte and 3G.
No it does not have wifi calling because that aplication is developed for tmobile phones.
Provided you have a data plan, the HTC One does have internet connection, and can also be a wifi hotspot and a tether to wifi-only devices (laptops, tablets, etc.).
Yes. IEEE 802.11 b/g
No, it is not possible to use your HTC Desire HD mobile phone wifi spot with a Nintendo DS for Pokemon games.
I believe all current smart phones have wifi.
Yes. I have yet to come across an android phone with out it.
First, reboot your device first. Then turn it back on and make sure you have wifi on and have it connected to your home wifi. If this doesn't work, reenter your wifi password.
Yes, And its Wi-Fi 802.11 b/g/n.
Yes and it also uses mobile network connections.
Many PDAs on the market these days have wifi capability. The most popular one is the Blackberry, but other companies such as HTC and Sony also produce wifi-enabled PDA devices.