Question about Samsung SPH-M300 Cellular Phone

1 Answer

Samsung M300 with water damage

When i insert the battery into the back of my phone the phone turns on by its self.

My next problem is even bigger my phone now gets no signnial unless i`m driving by a sprint store then it gets signnial. I have tried a signnial booster but it doesn`t seam to helpat all. It always says searching for service.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,871 Answers

Try this :
This works on most mini electronic devices like cellular phones and degital cameras etc .

it sounds crazy .

Remove the back (or Cover ) of the phone( or Camera ), battery, and SIM if your phone ( or Device ) uses one , DIRECTLY

Then, with a q-tip (or something similar), dab the connection points (shiny, goldish) on the battery, SIM, and phone. This should aid in drying.

Finally, place all contents in a bag of uncooked rice (separately, do not put back together just yet). it sounds crazy , but it draws the moisture out.

It normally is working after just 7-8 hours, but I would wait 12 hours or even 24 hours before attempting to use (just to be sure).

beware the water damage, despite being dry now, will void any warranties. Also, the phone's hardware is now weakened and if you drop it, the green mother board and circuitry could shatter - so be more careful.

This does work on electronic devices aside from phones as well. Simply tailor it to your device. If you do not have a SIM (Verizon phones, cameras, all others), remove only the battery. If you have an iPhone/iPod or GPS and cannot remove the battery, simply make sure it is all the way off, then put it in the rice bag. All electronic devices react the same to the rice trick.
related link is here :

rate if useful please !

Posted on Jan 17, 2010

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

How can repair a wet mobile cell?

Samsung Galaxy Smartphone: Water damaged phone: How fix:

Hello.. the procedure:

Electricity and water do not mix. If continue to use water short circuits chips inside making your phone's motherboard burn out = phone as a paperweight

1. Do not try to use your phone. Power it off. Immediately, if able to: remove the battery back door and take out the battery.

If you turned the phone on after getting wet, you probably shorted something out.. If you never turned it off and kept using it thinking it is fine.. but time passes and the phone continues to act up.. you are probably killing your phone as the water continues to damage the motherboard. Once you turn off the phone, consider the phone dead, because trying to turn it back on with spark energy to the motherboard frying it in the process. (I've seen that happen several times)

(if for example, you have a s6 family/note 5 whereas the phone where the battery does not come out without breaking the glue seal to take it out, leave it in. just power off the device.)

2. dry it off with a towel, shake out any loose water droplets inside the phone

3. use a hair dryer on low setting to try to dry out the phone... no hair dryer? set your phone out in the sun, but don't bake it.. (what you are trying to do dry up any water that might be inside)

4. get a empty container that's bigger/taller than your phone by at least 1/2 inch on either side, fill it with rice and submerge your battery-less and battery backdoor-less phone for 24-72 hours.

(the rice will dry out your phone. this takes time. water is usually trapped underneath the chips on the motherboard where you would not be able to get to dry off unless you un-solder the chips)

5. If you phone doesn't turn on after that.. it means that the water has either fried the chips on your phone and/or corrosion from water that is undried in the phone has effectively made it useless. You can't send it back to Samsung to fix, because it is your fault. Water damaged phones will cost anywhere up to $300 to fix. Consider all data on the phone lost. Time to buy a new phone.

If the phone turns on but something doesn't work, it means you shorted that part of the phone out.. Don't bother sending it to Samsung to fix because it was your fault. Take it to your local cell phone repair shop to fix. Ask them for a quote or at least get a diagnostic inspection to see what might be fixable. Explain it was water damaged upfront. Assess the damage costs to decide if you want to repair it or not

If the screen is black and you get a constant flashing red light that won't stop.. that indicates to service technician that your device is water damaged. Don't try to trick servicing shops about fault, there are water indicators in your phone that tells them it was your fault. Best to man up and tell the truth before you waste your time and money.


Feb 07, 2016 | Samsung Galaxy Cell Phones

1 Answer

My phone won't turn on


the problem is obviously not from the battery. There is something work with the phone.

Maybe you go ahead and get a new phone and if luckily the phone comes up later, you can dispose it off.

Take care.

Mar 08, 2010 | Samsung SPH-M300 Cellular Phone

1 Answer

Phone stuck on Camera

The phone has frozen. you may need to reset the software to get it running again. But you might loose your data if you flash the phone. I hope you don't have a problem with the screen. sometimes too, when the memory space is filled up, it freezes up. Take out the battery for some hours and try again. if it does not resume, then you may have to flash the phone to reset it to factory setting. Cheers!

May 19, 2009 | Samsung SGH-M300 Cellular Phone

2 Answers

Samsung SPH-M300 display screen is white

your screen is broke you need a new one or buy a new phone the same thing happen to me with the same phone and it cant be fixed

Mar 14, 2009 | Samsung SPH-M300 Cellular Phone

1 Answer

Emergency Download

you can take the battery and the back off the device and place in completely submerged in a bag of white rice and leave it in there for 1 to 2 days this will help absorb the moisture, this should fix it if the water did not damage the circut boards if the water damaged the circut boards then the device is fried

Dec 17, 2008 | Samsung SPH-M300 Cellular Phone

1 Answer

Water damage/charging problem

you can take the battery and the back off the device and place in completely submerged in a bag of white rice and leave it in there for 1 to 2 days this will help absorb the moisture, this should fix it if the water did not damage the circut boards if the water damaged the circut boards then the device is fried

Dec 01, 2008 | Samsung SGH-T619 Cellular Phone

3 Answers

Samsung M300- always flashes powering up but never does

you problably dropped the phone, or got it wet. Thus short circuiting either the motherboard or the battery.

Feb 20, 2008 | Samsung SPH-M500 Cellular Phone

1 Answer

Sph m300 phone

The problem might be that while taking out battery the slot must have been loosened. Try inserting a paper under the battery so that it touches the pointers otherwise see the vendor.

Sep 29, 2007 | Samsung SPH-M500 Cellular Phone

Not finding what you are looking for?
Samsung SPH-M300 Cellular Phone Logo

435 people viewed this question

Ask a Question

Usually answered in minutes!

Top Samsung Cell Phones Experts

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

Fotis Papastamatiou

Level 2 Expert

96 Answers

Bill Long

Level 3 Expert

587 Answers

Are you a Samsung Cell Phone Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides