You can use Wi-Fi calling to make and receive calls and text messages when you don’t have a strong cell signal.
If you are inside a building with poor cellular reception or in an area with poor cellular coverage, you can use Wi-Fi calling to stay connected.
Most smartphones now have dual-band Wi-Fi adapters. So you can use 2.4 GHz or 5 GHz Wi-Fi for your Wi-Fi calls.
In this article, we discuss whether 2.4 GHz or 5 GHz Wi-Fi is better for Wi-Fi calling.
2.4 GHz Vs. 5 GHz: Which Is Better For Wi-Fi Calling:
Both 2.4 GHz and 5 GHz Wi-Fi bands work equally well for Wi-Fi calling. Wi-Fi calling only requires minimal bandwidth, so both 2.4 GHz and 5 GHz Wi-Fi can easily support the data rates required for Wi-Fi calling. However, 2.4 GHz Wi-Fi has a higher range than 5 GHz Wi-Fi and can provide more reliable Wi-Fi calling at longer distances.
How Much Bandwidth Does Wi-Fi Calling Need?
Wi-Fi calling only require very little bandwidth. Typically, both upload and download directions of Wi-Fi calling only require around 100 kbps of data rate.
Can You Use Wi-Fi Calling With Both 2.4 GHz And 5 GHz Wi-Fi Bands?
Both 2.4 GHz and 5 GHz Wi-Fi bands can easily support Wi-Fi calling. Wi-Fi calling only need around 100 kbps of bandwidth, and both 2.4 GHz and 5 GHz Wi-Fi can easily support more than 100 Mbps data rates.
2.4 GHz Vs. 5 GHz: Which Wi-Fi Band Is Better For Wi-Fi Calling?
Both 2.4 GHz and 5 GHz Wi-Fi bands work equally well for Wi-Fi calling when you are close to the router.
However, the 2.4 GHz Wi-Fi band can give you a better range than the 5 GHz band. So if you experience random disconnects during Wi-Fi calls, switch to the 2.4 GHz band for better range and stability.
Which Wi-Fi band is better for Wi-Fi calling also depends on the Wi-Fi interference you have in your house.
If the 2.4 GHz band is too crowded, you should use the 5 GHz band for Wi-Fi calling. Similarly, if the 5 GHz band is too crowded, it’s better to switch to the 2.4 GHz band.
Why Does Your Phone’s Wi-Fi Calling Only Work In The 2.4 GHz Band?
If your phone’s Wi-Fi calling only works in the 2.4 GHz band, it might be due to the shorter range of the 5 GHz band.
As we’ve said before, the 5 GHz band has a shorter range than the 2.4 GHz band. So if you are far away from your Wi-Fi router, you will only receive a weaker 5 GHz Wi-Fi signal.
With such a weak Wi-Fi signal, your phone will prefer the cellular connection instead of Wi-Fi.
How To Make Wi-Fi Calling More Reliable
If you experience random disconnects with Wi-Fi calling, it may be due to poor Wi-Fi reception.
You can move closer to your Wi-Fi router to get a better signal. Also, move away from any Wi-Fi interference sources like other Wi-Fi devices, Bluetooth devices, microwave ovens, and fluorescent lamps.
You can also experiment with different Wi-Fi bands and channels for Wi-Fi calling. Switch between the 2.4 GHz and 5 GHz bands and see which one gives a better Wi-Fi calling experience.
Also, switch between different Wi-Fi channels within each band to find out a less crowded channel.
Wi-Fi calling only requires very little bandwidth, and both 2.4 GHz and 5 GHz Wi-Fi bands can easily support Wi-Fi calling.
The 2.4 GHz Wi-Fi band has a higher range than the 5 GHz Wi-Fi band. So if you experience random disconnects during Wi-Fi calls, switch to the 2.4 GHz band for better range and stability.
Wi-Fi Calling Bandwidth Requirements