Don't, just don't ...
Still trying to get a Smart watch going: ran into clunky software, inadequate instructions, SIM card problems, the difficulty of manipulating the settings on that tiny screen with stiff old fingers - the list goes on.
Tried the help desk. Unlike others, you can't just call, have to book an appointment, at their convenience. Mine took three days, seemed to fix the problem, until I tried it again a few minutes later.
Now ready to throw the damn thing at the wall.
Conclusion: DON'T buy one. Really.