What Cell Phones Have External Antenna Jack . Do not have usable rf ports. The telstra tough max has an external antenna port, its the only phone on the market at the moment that does have a external antenna port and best still it works on telstra's 700mhz 4g network. PortaPack for HackRF One is Imminent! from www.sharebrained.com The amplifier is about half as powerful as the wilson pro 70 plus, so you won't cover as large of an area, but that's most likely sufficient for most small to medium size homes. I'm not sure about any current phones though. After inquiring with a number of people selling phones on your list they told me their phone had no external jack.
What Todo With Old Cell Phones. Well, throwing it in the trashcan is not what to do with old cell phones. You can put approved games.
Pass on items for free at places such as freecycle and freegle All phones connect to 911 regardless of having a phone plan or not. If you take old tech to charity shops such as oxfam, they will refurbish or recycle them, or donate the proceeds of selling your old device on ebay to charity through the ebay for charity scheme.
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