What ends up happening is an inability to connect to the Wi-Fi despite having a good signal. There are some smartphones, however, particularly the more higher-end ones, that have an output of between 20dBm and 30dBm.īut even with the maximum power output a smartphone wireless antenna can have to reach further, it helps nothing if the receiving device has a low power receiver. It may be an old phone, but its power output is consistent with some of today’s smartphones. The above table shows the power output of the Samsung Galaxy S4’s wireless antenna output. The version a device supports can impact how far the Wi-Fi signal can reach. To communicate with each other, devices connected to Wi-Fi (or WLAN) use the IEEE 802.11 protocol, which comes in a variety of version. Once an AP starts broadcasting the signal, it creates a Wi-Fi hotspot, which is basically an area where that’s within the Wi-Fi signal’s reach. An AP can be a modem/router, smartphone, or any other device that can broadcast a Wi-Fi signal. The higher frequency allows the signal to carry more data.įor a smartphone to connect to a Wi-Fi network, it needs to have a Wi-Fi transmitter and receiver that communicate with a Wi-Fi access point (AP). It uses radio frequencies on the electromagnetic spectrum to send signals between devices.īut unlike radios that receive frequencies in the kilohertz (kHz) and megahertz (MHz) range, Wi-Fi transmits and receives data in the gigahertz (GHz) range, particularly 2.4GHz or 5GHz. Wi-Fi works on the same principles as TVs, radios, walkie-talkies, and other wireless devices. Because of that, the coverage of a smartphone Wi-Fi hotspot can be much lower than the theoretical range. In reality, a smartphone’s hotspot coverage range is affected by multiple factors including the Wi-Fi protocol used, the environment you’re in, and the strength of the signal. But after some digging, I have found some answers, though it’s nothing definitive.Įssentially, the range of a mobile phone Wi-Fi hotspot is potentially anywhere between 20 meters and 100 meters in ideal conditions.
Unfortunately, most smartphone manufacturers don’t provide much detail around their devices’ Wi-Fi specifications, besides the different wireless protocols the phone supports. Question is how far does a smartphone’s Wi-Fi hotspot coverage reach? If your smartphone is in your bedroom, can you still access the hotspot from the kitchen? Or if you’re downstairs, can it reach upstairs? What about outside? It even helps in situations where multiple devices need to connect to the internet such as at home. This really comes in handy when there is no Wi-Fi available and you need to connect your laptop to the internet.
One of the coolest things that smartphones can do is act as a Wi-Fi hotspot.
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