probably not. once the phone innards get wet, your worst enemy is time. the quicker you can get it dried, the better. the longer the liquid sits, especially in a closed phone, the greater the damage from corrosion.
here's what i recommend. get the motherboard out and give it a good 1+ day soak in 99%+ isopropyl alcohol (IPA). if you see any visible residue or corrosion, give it a very gentle scrub with a very soft tooth brush (like the kind dentists give free to young kids). after the scrub, give it another soak (at least half a day this time) in clean IPA. agitate a little then take it out and give it one final rinse with clean IPA. bend a paperclip open and pop one end through an open hole so you can hang it to dry in a slightly (or much) warmer room than usual room temperature. make sure the humidity is as low or lower than normal (ie, using a hot shower to raise the air temperature of the bathroom would defeat the purpose - i know this should be obvious, but sometimes ya just gotta say it). let it air dry for at least a day or two.
at this point, if you have known working and dry parts, you can reassemble and give it a shot. i'd be hesitant to use the original parts because of both the liquid and physical damage.
at this point it's a crap shoot. if the board is dead, no amount of IPA will resurrect it. but i have used this method to bring motherboards back to life than had suffered major liquid damage.
good luck to you