Lora is cheaper than android devices lol
You can get it for $20 and the range will be few miles. Also it uses AES256-CTR for encrypting channels. Much more reliable.
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You can use AES256 with BLE too, that is possible through reticulum.
Those who use this tech know that logistics are the first thing to disappear. It's not about the price today, you simply can't buy it during collapse or emergencies whereas androids you'll scavenge them anywhere