@bksparrow It’s not really that low SAR causes phones not to work on certain networks- with Mudita Pure, it’s all about the PTCRB certification. And the thing about the PTCRB certification is that only some North American cellular operators rely on it. Another thing that we always have to consider is that the US carriers, for a long time & for the most part, controlled the cell phone market. There are specific phones that are carrier locked & the American wireless marketplace is tightly controlled by carriers who have a habit of picking winners and losers, while setting prices and insisting that there shouldn’t be any oversight. Getting a device on a major US carrier can take up to 15 months and cost millions of dollars. Carriers are also notorious for demanding custom devices in order to create customer lock-in. Basically, our ultralow SAR was used as an excuse that we did not get the PTCRB certification. The cell phone market in the US doesn’t really like outsiders like us.