I am looking to building my own phone from a SBC running a linux distro with plasma mobile and that can make calls. and I have some questions:
Where can I start?
Which SBC to choose?
How would I achieve the call functionality?
Make it, Fix it, Renovate it, Rehabilitate it - as long as you’ve done some part of it yourself, share!
Especially for gardening related or specific do-it-yourself projects, see also the Nature and Gardening community. For more creative-minded projects, see also the Creative community.
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To add, in the US, most service providers will not let a device on their network until it has gone through FCC approval. You can get around this by buying a cell module, which has gone through approval, but most of those are data only last I looked.