No reception on cell phone "No Network Service"

Wet Cell Phone
Immediately remove the phone from the water, turn off the cell phone, remove the battery and SIM card. To dry out the cell phone put it in a large plastic bag with silica gel drying crystals then put it in a warm sunny place for several days or in front of a warm fan heater for several hours. Reassemble the phone and hope it will work properly again, but if does not work then it is faulty and you need a new cell phone.

Usually when the mobile falls into the water you need to remove everything and immediately take it to a service center so that they will wipe it with some petrol. Now it doesnt work since you dropped it in water only. Check it again with a Nokia service provider.

Wet Cell Phone
Immediately remove the phone from the water,turn off the cell phone remove the battery and SIM card. When you have driedthe cell phone by putting in a warm sunny place for several days or in front ofa warm fan heater for several hours then reassemble the phone. Hopefully itwill work properly but if does not work then it is faulty and you need a newcell phone.

Make sure that the battery was removed immediately and the phone kept for drying. Use some warm air blown to the battery compartment to dispel any moisture. Also you can pack the phone with some mositure absorbants like silica gel.
If you are able to open then remove and dry the board and ONLY when the boards are confirmed to be DRY you must insert the battery back. If there is function fault then you need help and consensus from a service center.

open it up, remove battery & memory, dry it completely on top of a TV and reassemble & hope it works.

Bring it to the nearest service center. In the meantime, don't put the battery on it. It may lead to more complicated problems.

pull the battery out immediately, drop it in a glass(not the battery) of 90% or higher isopropyl alcohol, shake the bubbles out, remove from glass and let dry for 24 hours in a cool dry place.

The next thing to do if you drop your cell phone in water is to remove the battery immediately without even hesitating to turn off the power. This reduces the risk of a short circuit which would render your phone useless. Dry the batter with a towel and set aside to dry thoroughly. The battery itself may or may not work again, but fortunately batteries can be replaced fairly inexpensively. Even if the battery does work, it is a good idea to get a new one so as not to risk it leaking battery acid in the future.
After you have removed the battery, dry off the cell phone with an absorbent towel as best as you can. Use cotton swabs to soak up water in crevices and on any fragile, exposed circuits. If you have dropped your cell phone in water, it is also helpful to disassemble it if you can and let all the parts dry separately. Just be sure that you know how to put it back together. If it is a flip or sliding cell phone, leave it open for maximum evaporation.
If you drop your cell phone in water that isn’t pure such as a beverage or in salt water, rinse the phone off with fresh water once you have removed the battery. Once you drop the phone in water, the additional rinsing will not do further damage, however, minerals or other materials will.
If you drop your cell phone in liquid that isn’t pure water, you may want to try giving it an alcohol bath. The alcohol will displace minerals and microscopic substances as well as aiding in the evaporation of the fluid. If it is available, you should use an alcohol concentration of 95% rather than rubbing alcohol that usually contains only 70%.
Once your phone is clean, leave it in a warm dry area or near an air conditioner for three days before you attempt to replace the battery and turn it on. This is very important, because although you may think that you have thoroughly dried it, the slightest moisture can react with the battery and cause it to short circuit. If drop your cell phone in water, and want to save it, resist the temptation of turning it on to see if it is working until you have waited at least 72 hours. Unless you have insurance for your cell phone which covers water damage, there is no point in sending it to the manufacture with the hope that they will replace it under warranty. If you drop your cell phone in water, the technicians will be able to tell immediately due to moisture sensitive stickers that are contained inside almost all cell phones. The best thing to do is to try the tips mentioned above and repair it yourself.