I have an At&t optimus g and I have been using it in Pakistan for quite some time now, and it worked flawlessly without any major problems. However, now in Canada the same phone doesnt receive network coverage and the service providor says that the connection fequency is not compatible with the phone.
Also, I rooted and bootloader unlocked my LGOG recently using FreeGee but ended up softbricking it, then later using teenybins I did recover it and flash the stock firmware. But I did not flash a baseband (dont know if i need to).
So, I think its either the baseband or radio (some regional problem) causing this problem but have no clue which one it actually is. Any help would be appreciated. Thankyou.