First, the background:
I was having problems with the WiFi on my TWC modem. The 2 Android smartphones and 2 iPad2's that SWMBO and I use rarely had any problems. However, when the girls would come home from college and add their iPhones and MacBook Pro laptops, the performance would be so bad as to be unusable at times. If fact, we would often have to actually cycle the power on the modem in order to connect devices to WiFi.
Just FYI, even when the girls are home, there is no gaming. It's mainly texts and some youtube on their phones, web surfing and youtube on their laptops. It should also be noted that the inability to connect without resetting the modem isn't based on high usage at the time of the incident. Sometimes even the first device that tries to connect will fail to do so.
I called TWC tech support and they suggested that I upgrade (no charge) to a dual band cable modems/router and use the tablets and smartphones on the 5G band and put the laptops on the 2.4G band.
Well, after 2 TWC screw-ups in trying to get me a dual band modem (once in a TWC store and once via mail) they decided to send a technician who would ensure that I got a dual band modem and set it all up for me. I was glad to hear that because it would give the opportunity to discuss the issue with the tech face to face.
The technician installed the modem today and we discussed the original problems with trying to use multiple device as well as what tech support had told me about smartphones and tablets on 5G, laptops on 2.4.
While he agreed that my first modem was probably faulty. He did not agree about splitting the devices between the 2.4G and 5G bands. He said that if the device can see the 5G network, then use it, regardless of the platform. There is much less interference on the 5G band, so there shouldn't be any connectivity or performance issues.
After the dual band modem was installed, we got the 2 Android phone and iPads connected to the 5G side, but I won't be able to test anything with the iPhones or laptops until my daughters come home next month.
My main question is regarding the splitting of the devices between 2.4G and 5G. Who is right(er): tech support (laptops on 2.4) or the on-site technician (everything that can see 5G should be on 5G)?