![]() Speedtest by Ookla is another free app, trusted by professionals for testing connection speeds.It also features compass points to show you which direction your cell signal is coming from. what you are likely to experience when normally using your phone) and view maps of real coverage in your area-while showing you which network is best in your area. OpenSignal is a free app that allows you to run a test of your iPhone’s true speed (i.e.How to check signal strength on an iPhone iPhone cell phone signal strength appsįor iPhones, there are some helpful apps that you can download to test existing cellular signal strength and network speeds. If you’re not familiar with cell phone signal boosters and how they work, this guide to cell signal boosters offers a helpful explanation on how they make stronger cell connectivity possible. When your cell signal is weaker than -100 dBm, it’s likely that you won’t have service without relying on a cell signal booster. To enjoy optimal functionality on your smartphone or cellular-connected device, you’ll want a signal between -50 dBm and -80 dBm. It becomes more difficult to maintain a wireless data transfer at the -100 dBm range-particularly at 4G or LTE speeds. To make a call, -100 dBm is not ideal but will work. How does cell signal work with my phone?ĭifferent ways you may use your phone require different cell signal strengths. In situations like that, simply convert the number to a negative. In field test mode, some phones may show the dBm measure as a positive number. So, a cell signal that measures -76 dBm is twice as powerful as a cell signal that comes in at -79 dBm. Being a logarithmic unit of measure, each 3-dB increase is actually doubling the power. The typical range of measure for cell signal strength is between -110 dBm and -30 dBm. See the cell signal strength chart below for a great comparison: ![]()
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