Quote from: nc50lc on February 05, 2018, 05:07:06 AM

If you can contact a mobile phone expert or you are knowledgeable in mobile phone rom, try to recover your erased wallet file from that phone.
Any erased storage can be recovered by a specialized recovery tool, one must need expert knowledge in order to successfully recover a file using those tools.
If you got the password and didn't know the seed, the only way to access your btc again is to recover that wallet file.

I'm not using a mobile version of electrum myself, but try to look for the wallet file in your SD card (wallet_1 default name if you didn't changed it during creation).

AFAIK, Factory Reset on phone only delete files on Phone internal storage, it does not touch the SD Card
OP most likely had his Wallet file on Internal, which got wiped.

If I were you OP, I would try nc50lc's suggestion, get someone knowledgeable on file recovery to try recover your wiped wallet.
Until now, I would suggest to not use your phone or even better, turn it off completely. Your wallet file directory could be replaced any time with a new data that you've downloaded on your phone.