If my phone died in the middle of transmitting my taxes, how can I make sure it went through?

[VolvoGirl]

You can check your efile status here     

https://turbotax.intuit.com/tax-tools/efile-status-lookup/   

When you efile you get back 2 emails.  The first email only confirms the transmission.  The second email says if the IRS (or state) Accepted or Rejected your efile.

When you log into your account you should also see the status and if it was Accepted or Rejected, Started, Printed, Ready to Mail, etc.  What does it say?

Go back through the File tab again.  If it already went through the second time will just reject and be ok.

[fanfare]

if your phone died, it's unlikely it went through, 
OR 

it will be REJECTED for being truncated.