i dropped my iphone 6 in my pool and it keeps searching for signal

This Monday i dropped my iPhone 6 into the pool, i immediately took it out, removed most water i can on exterior, removed my sim card,and put the phone in rice in a matter of 7 minutes. I left the phone inside till Thursday and when plugged it in it tuned on was charging and working perfectly fine, i try to make a call and it doesn't work i realize its says Searching..., so i tried restoring it and once i did, it still kept on saying that now i have a bricked iPhone that when it says Activating iPhone on setup screen... it says could not activate iPhone. So then i tried to restore again and i get error 52!! please help i need this phone its brand new!