[Android Q&A, Help & Troubleshooting] Count_Xda:
possible options/directions

Thanks koopg for getting hands on this!

I myself am after a method that will allow me to make calls from a dumb phone (what I will refer to as "secondary device") without touching the Android smartphone/tablet (what I will refer to as "primary device"). Both devices are connected via bluetooth only. As earlier posts from other members noted, this will minimise e-wastes for disposing otherwise totally working dumb phones, using them in environments unsuitable/unsafe for the delicate smartphone (dirty tradework, dancing in nightclub etc)

The second option is to allow a secondary device (Android tablet or cheap EOL smartphone) to make calls, using a primary device with telephony (99% non-tablet smartphones). Again, earlier posts examples are using the secondary device as car GPS/dialer, while the primary device is kept in the bag/suit pocket etc.

It would be perfect if no software modification is required for the secondary device, though apk is most likely needed to be installed on the primary device -- hence your expertise.

If you're confident with getting it to work, but need to play around with a secondary device to find out how it works, I'm willing to sacrifice my CDS (see below option 2) for that purpose. Please PM me.

I've found 3 options (and am actually using one myself for the time being until the above project comes into fruition), hopefully you can look at their workings and weigh which direction is easier to start towards. The possibilities are definitely there as all these options are working on non-rooted primary devices. (please replace double equals "==" with period "." for links thanks):

(1) Bluetooth dialer from big brands (link: www==computerworld==com/article/2485664/smartphones/does-your-phone-need-a-phone-of-its-own-.html?page=2

Some models are proprietary and can only work with phones of their brand (HTC)

Some models require additional technology other than bluetooth -- i.e. NFC (Sony)

Other models (Samsung and Alcatel in the article above) will work with phones of other brands, but it is highly possible that they must be smartphones/tablet Android, and need an apk installed on the primary device

Only the HTC model seemingly allows the secondary device to receive SMS (copy) from the primary device. As mentioned above, the technology is proprietary and most likely involves software in the secondary device working only with kernels of HTC primary devices.

(2) Bluetooth dialer from China (link: www==everbuying==com/product549478.html?currency=AUD&gclid=CMCqrYSvrcICFY-XvQodwnYAPQ

I have one of these and they work perfectly, forwarding calls and SMS from primary device to secondary device

No apk required to install to primary device to receive and make calls on secondary device, but apk is required (provided by manufacturer) to be installed on primary device to receive SMS

Secondary device is non-Android (looks very similar to Mediatek software)

(3) Bluetooth dialer from China (link: www==dx==com/p/ruiq-rq-d1-bluetooth-v2-1-edr-earphone-w-mobile-phone-dialer-gms-mini-phone-black-white-241800?tc=AUD&gclid=CLLLyIuvrcICFUaWvQodDBcAow#.VIDXEzGUfHU

Headset and keypad integrated into one