Long ago, when dinosaurs roamed the earth and knights in shining armor fought them, people had landlines. And they plugged cordless phones into them. Everything was great. Then phones started using the 2.4 GHz and 5 GHz frequencies. Wi-Fi came out using the same frequencies and the two interfered with each other. Now, it seems increasingly difficult to keep cordless phones from interfering with Wi-Fi.
Many people have neatly solved the problem by using cell phones exclusively. But what if that isn’t an option? You’re actually in luck, and you don’t have to dig up a 20-year-old 900 MHz phone and try to find a battery that works in it.





