how i can reopen my wallet if my phone with two factor is broken?
Assuming you have your seed, you can simply recover it via File > New/Restore > Wallet with two-factor authentication > Next > I already have a seed.
Assuming you did not write down/lost your seed, Electrum 2FA service provider is TrustedCoin, you can contact them here:
https://api.trustedcoin.com/#/contact-us.
Yes, definitely you're right mate. Actually, I also searching for this because I also want to know how to solve the OP case, so what if I also encounter this problem near in the future at least I have an idea.
It's very informative though.
In addition please refer to this link for further information that you want.
http://docs.electrum.org/en/latest/2fa.html#restoring-from-seed