Recently, lots of people consult that why their Smart tv box cannot connect 5.0 GHz wifi, there is several saying as below: 1. The Android tv box does not support Dual-band wifi, that means that you tv box is not 2.4 GHz and 5.0 GHz wifi available. 2. Because those are two different bands, not just a pretty label. They give an answer, saying if you have a router that provides both bands, then just choose the 5ghz network. But if your router only has the one, there’s no reasonable way to upgrade it. Just a word of precaution, the unreasonable way costs far more than just buying a new router that does both bands. 3. If your android tv box with dual-band wifi and the router that provides both bands, but still can not convert 5ghz, then the possible problem is drop material or desoldering with the box, the machine should be repaired factory.
But there is another question like this, some people confused that why their WiFi switch from 2.4ghz to 5ghz?
There’s a number of reasons why your wifi router might be switching you from 2.4Ghz to 5Ghz. The nature of radio really leaves you at the mercy of the environment. If you have a large home with thick walls, lots of furniture, glass windows, distance from the router, etc.. all of these things can influence how your connection will be to your wireless router.
Most home wireless routers will automatically switch between 2.4GHz and 5Ghz and back again when it senses a weak connection and does this to try to improve the user experience.
Many home wireless routers have a way to disable this switching and allow you to assign an SSID to just 2.4Ghz and another SSID to the 5Ghz band. This can be fairly advanced so if this seems a bit too much for your comfort zone then leave the settings alone.
Another option is to experiment with the channel that your router is set to broadcast. Most routers, when you first turn them on, will scan the area looking for other wireless routers and what channels your neighbors are on. There are 11 channels reserved for 2.4Ghz in the US and 14 channels in Europe.
Many people opt to use the 5Ghz bands as it has less interference from neighboring routers, wireless telephones, etc. There are also more channels to choose from, and those channels can typically carry more traffic which means a fasters more stable connection.
One way to fix this problematic switching is to go to the manufacturer’s website and see if there are any updates to the firmware for your router. Sometimes a simple update is all that’s needed to fix your problem. NOTE: Most routers allow you to search for updates right from their configuration page. If it shows no updates are available to go out to the manufacturer’s website anyway and look for yourself.
One last thing to remember, it might not be your wifi router, it could be your client (meaning the laptop, or other connecting devices) trying to access the router. If this is an older device you might need to update its wireless driver or software.
If after all of this and its still bugging you-you might want to research getting yourself a new wireless router. There are some amazing new wireless routers that support new 4K T.V.’s, streaming media like Netflix, as well as console games. Check out reviews of new routers and see if this is a solution for you.