I'm looking for a solution to enable me to use an older smaller android phone while I'm in my workshop space without having to shut off my phones and change SIM card all the time. The aim is to be able to answer or make calls and keep my shiny new phone safe, along with better reception. The cell reception is poor in my workshop.
There is a hardware solution call X-link BT http://www.myxlink.com/xtech/products.aspx that is basically a bluetooth to PSTN adaptor that I could use a DECT phone with that would do the job.
I have Linux, spare old android phones and good WiFi coverage over the workshop areas. I've been looking to see if there are any apps or solutions that use bluetooth or USB connection to Linux laptop to carry the call over to another phone but haven't found anything.
There must be a way to carry the voice stream from my mobile onto WiFi to another WiFi enabled phone device to have the second phone act like the primary phone for receiving and making calls.
Anyone know of anything or can offer ideas?