I have enabled 2SV on my gmail and other major sites and apps which needs it. A few days before i enabled it for my wordpress blog and following it , i flashed a new ROM. I totally forgot that i didnt disable 2SV in many sites , nor in my google account. I was very lucky that the cookies were still active in my browser. I was able to enter into my blog and reapply for 2SV + GA. Even though Google does provide you an alternate to send a code to your mobile phone , many sites / services doesnt have this option. But they do provide a printable "Table" (lastpass , google etc). So see to that you get those tables printed and hidden somewhere or placed in your wallet. IN case of my blog , there was no alternate to login , if i had erased the GA which was linked to it. Is there any alternate to recover the GA code ? or to get back the account ?