Q : What SynSMS can do.
1) Make duplicate of your phone SMS to your tablet or another phone via bluetooth and keep synchronize.
2) Send and receive SMS from your phone or tablet or another phone.
Q : What SynSMS cannot do?
1) Currently does not support MMS.
2) Does not support multiple devices connection. Can only connect to one device in one time.
Q : Can SynSMS be standalone?
Ans : SynSMS can be used as standalone without connecting to other devices. You can use as simple SMS application without MMS support. You need to select master device setting if you want to use as standalone.
Q : Can SynSMS be default messaging app?
Ans : Currently it does not support MMS. So it cannot be set as default messaging app in android 4.4 and above devices.