I recently learnt that there are different types of dual sim; i.e. that having slots for 2 sims doesn't mean they're both fully active at the same time.
Looking through the documentation included with my phone & attempting a few searches I haven't been able to find the answer; before requesting my office provide me with a work sim I'd like to know that my phone can handle it.
Is there a way to tell if your phone is dsds or dsfa (i.e. without using a second sim to test)?