Question about T-Mobile MDA

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MDA Problem Thanks for the info. So far everything has been working normally. It doesn't seem to need a new battery right now. I have no idea why it stopped working for about three weeks, but we are good to go!

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Oh yeah your welcome. i loved my MDA which is y im trying to find one on ebay! lol it really has been the best phone ive owned. ive tried blackberry and a few nokia smartphones but none can quite compare to the MDA! the only problems ive had with it were the battery the phone completely stop working and when it did work it kinda bothered me that active sync and other programs would automatically start for no reason but wouldnt show up on screen they would just be running and would slow the phone down and i would have to check every couple of hours or so in running programs to see if anything unneccessary was runnning. but other than those few problems its the best phone i believe!

Posted on Mar 31, 2008

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My T-Mobile MDA won't turn on or take a charge, battery was low


I had the same problem, but got the idea to "jump start" the battery from Googling the problem. At night, I had turned off my MDA to charge the battery and then in the morning, couldn't revive it. I removed the battery from my MDA, and determined which battery terminal was positive (far end of one side) and negative (far end of the other side) by using a multi-meter. BTW: Battery was still @ 3.5V (okay…battery was still alive, if just barely). Then, I found a 5V DC charger (5W Max output = ~1A) from my bluetooth headset. I used one wire (CAT5E) and connected it to the negative side of the adapter (outer sleeve - again, verified by multi-meter) and another wire to connect to the positive tip of the adapter. I had to strip about 1/2-inch of the insulation off of the wire on the DC adapter side, and about 1/8-inch of the wire on the battery side. Plugged in the 5V DC charger and then I touched the negative wire to the negative battery terminal and held it there, while I touched the positive wire to the positive battery terminal for about 30-45 seconds. Put the battery back in the MDA, started it up, and now it's charging on the regular MDA AC Charger that came with the phone. Problem solved.

Apr 07, 2009 | T-Mobile MDA

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Hi, I would like some help reg, the T-Mobile MDA charging. I got 2 batteries, 1...


Your battery has been depleted past a chargable state.  This is a due to a bad design in the phone that doesn't monitor the battery power state well enough.  It actually allows the battery to be taken under the minimum amount needed to recharge the battery. 

You can fix this, but do so at your own risk.

You can simply purchase a new battery, that will work, just been sure not to let it deplete the battery totally anymore.

Now, on to the fix

-Take out the battery.
-Get any usb cable you can find sitting around. (any usb wire will do, an old printer cable, anything with a usb end that can plug into your computer)
-cut one end of the plug off. You need to leave the side on that connects to your computer. Cut off the side that plugs into a device (printer, camera, web cam, etc)
-Strip the rubber off the wire and expose the wires inside.
-Separate the wires from each other. You will only be using the BLACK and RED wires.
-strip the very end of the black and red wires carefully using a wire cutter exposing the metal wire inside the red and black covering.
-Plug in your home made battery charger to your computer. Careful not to touch any exposed metal, as it will give you a small shock.
****WARNING****
DO NOT UNDER ANY CIRCUMSTANCES ALLOW THE RED AND BLACK WIRE TO TOUCH EACH OTHER
****WARNING****

-now carefully hold the black wire to the negative terminal on the battery (it should be noted with a black circle with a - in the middle). Then touch the red wire to the positive terminal (it will be noted with a red circle with a + in the middle).

Hold the 2 wires there for 20 seconds. Then quickly plug the battery back into the phone, and then plug it into a regular charger. Give it little bit of time, if you've done everything correctly the charge light should come on.

I had to repeat the last step again to get the light to turn on indicating it was charging.

You must not hold the wires to the battery for too long, 20 seconds should do it. You can overload a battery with this trick and actually make it explode if you hold it there too long. You are well within the few minutes needed to detonate the battery due to overcharging by sticking very strictly to 20 seconds.

Just be careful and you'll be fine.

One you get a charge light give it a few minutes in the off position, then try powering up the device and keep it plugged in until you get 100% charge.

Good luck,

Peter




on Jan 08, 2008 | T-Mobile MDA

1 Answer

Charging prob


dear squeeze ur MDA pins with small flat screw driver or some type of needles..i hope this will work...

Mar 05, 2009 | T-Mobile MDA

1 Answer

T-Mobile MDA won't hold a charge


if you insurance on your phone I recommend using it, I had a MDA for a couple years and had about every problem in the book, but not that one. It sounds like you've done everything possible, the only other thing i could think of is a hard-reset. Anything beyond that would tinkering with the internal hardware.

I think you can get a MDA pretty cheap on ebay these days

Jul 19, 2008 | T-Mobile MDA

1 Answer

MDA will not charge


dear there is some problems in the pins of ur MDA...squeeze them with something...then it will work...

Jun 22, 2008 | T-Mobile MDA

1 Answer

MDA will not power up.


another this to try is get a new battery.
mine had the same problem i would try to charge and nothing and it would turn on for about 30 seconds then turn off and i tried putting it on a charger within those 30 seconds but it wouldnt take a charge.
i got a new battery theat had some charge in it and it worked great! alot of the time thats all you need it a new battery

Mar 15, 2008 | T-Mobile MDA

6 Answers

Battery won t charge or operate phone Problem - T-Mobile MDA Compact Smartphone


Okay, I searched and searched until I found a solution that worked for me. I tried the USB thing, I got my phone to turn on once, but never to charge. Here's what I did:

(Do this at your own risk)
I zapped my battery with a 9v battery. One wire on each terminal and then held it to the MDA battery (positive to positive, negative to negative) for about three seconds. I did this about five times. (Don't let the wires touch while they are connected to the 9v battery.) I IMMEDIATELY plugged my phone into a wall charger, NOT my computer (The computer wouldn't charge my phone). As soon as it was connected to the wall charger, I turned it on. After starting up, the orange light came on, and it started charging. I was skeptical about this solution at first, but trying everything else I resolved to do this and then if it didn't work buy a new battery, but it worked and my MDA is charging as I'm typing. The original ideal came from a post on the xda-developers website by dew1989. I added the additional steps that got my battery charging again. I hope this helps!

Dec 04, 2007 | T-Mobile MDA Compact Smartphone

1 Answer

Phone does not charge battery


Use the factory charger, i had that problem becuz i was using a razr charger, if nothing works call tmobile and tell them u r in warentee and u want to do a hanset exchange

Nov 22, 2007 | T-Mobile Wing™ Smartphone

1 Answer

T-mobile mda


buy a battery new

Sep 14, 2007 | T-Mobile MDA

4 Answers

T-mobile MDA on/off switch broken


plug in your charger to your phone, find something small to stick into the reseting hole, when your phone turns on, go into settings>power>advanced: un-click the "turn off device if not used for"
it may drain your battery faster, BUT it works!!! :D
Good Luck!

Apr 14, 2007 | T-Mobile MDA

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