Question about Sony Ericsson K750i Cellular Phone

3 Answers

The keypad light on my k750i wont go off

Ive tryed turning the phone off and on but its constantly on, when i took the battery out it went off but as soon as i put it bk in it went on again

Posted by on

  • VW PENGUIN Jan 28, 2008

    i tryed it but it stayed on so its been sent off to be repaired or replaced

  • gvael Aug 29, 2008

    Same problem here, after 2.5 years of use, the 2top keypad leds (L and R of the joystick) won't go off, not even when I switch off the phone.
    Took it apart, to check for shortages but could not find anything obvious.



3 Answers

Well after being sent for repairs twice they have sent me a new phone :D

Posted on Feb 17, 2008


Replace "pcb"?

Posted on Feb 01, 2008


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 79 Answers

I reckon it's a charging problem - mine did it! Charge it for about an hour, then switch the phone off. Turn it back on and charge as normal.

Posted on Jan 28, 2008

1 Suggested Answer


6ya staff

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Menu Button not working

If your phone is heavily used it could just be a coincidence that you went into bluetooth and the buttons stopped working. If you have had the phone for sometime it could be the case that the keypad is worn out. this was a know problem with the K750 about 3 years ago.My advice would be to upgrade to teh C902.

Nov 02, 2008 | Sony Ericsson K750i Cellular Phone

2 Answers

Keypad freeze

Did the key pad froze before you took the battery off? If so, it mean the keypad is damaged. If you have insurance, you may call customer service and have it replaced for a new one.

If it frozed after you shoot it off, you might call customer service from another phone and they might help you to unlock your phone.

Jul 17, 2008 | Samsung SGH-D900 Cellular Phone

1 Answer

Phone wont turn back on.

try another battery or upgrade the mobile's firmware on the phone to correct this issue

Jun 27, 2008 | Sony Ericsson K800i Cellular Phone

2 Answers

Keypad lock for k750i

You can't lock it with a code, unfortunately, the best you can do is to do a key-lock, which you can do by pressing the * button, and then the right contextual button (the one right underneath your screen).

If you're worried about your phone being abused, you could consider setting a SIM PIN code, but this requires you to turn the phone off for it to be active.

Apr 15, 2008 | Sony Ericsson K750i Cellular Phone

1 Answer


Sometime, it may related to hardware issues such as bad cable or LCD parts. You may need to open it and take a look for any loosing part before you can determine further issue. Email me at [email protected] I will email you the link where you can disassembly your phone.

Mar 01, 2008 | Sony Ericsson K750i Cellular Phone

1 Answer

K850i wont turn on/off

i sent it back for repair under the guarantee

Feb 27, 2008 | Sony Ericsson K800i Cellular Phone

2 Answers

The keyboard on my k750i wont go off

I had the same problem and was not a software problem, I dismantled the phone just taking the two screws near the battery compartment, remembering of course it is necessary to remove the battery as a precaution before and the memory stick as well. Once this is done remove the front cover with a thin key carefully, with a cotton swab moistened with alcohol, clean the metal contacts including some that are in contact with the housing of the keyboard (the bottom of the metal device that is covered by a white plastic material) inside of the sides that look good, you'll know when to open, just waiting a few moments to dry and re-inserting the battery test. I emphasize that this part of the white internal keyboard must be in contact with the bottom where it enters into contact with small contacts, where they might be the electrical ground.

Eu tive o mesmo problema e não era problema de software, eu desmontei o celular apenas tirando os dois parafusos próximos do compartimento da bateria, lembrando claro que é necessário retirar a bateria antes e por precaução o memory stick também. Feito isso retire a parte da frente da capa com uma chave fina com cuidado, com um pedaço de algodão levemente umedecido com álcool, limpe os contatos metálicos inclusive uns que ficam em contato com a carcaça do teclado (parte de baixo metálica do dispositivo que está coberto por um material plástico branco) da parte interna que ficam bem nas laterais, você vai saber quando abrir, espera alguns instantes apenas para secar e teste inserindo novamente a bateria. Ressalto que essa parte branco do teclado interna precisa estar em contato com a parte de baixo onde ela entre em contato com pequenos contatos, onde possivelmente deve ser o aterramento elétrico.

Jan 20, 2008 | Sony Ericsson K750i Cellular Phone

2 Answers

It wont turn on

try to use different battery and if it's till the same. you have to go to cervice center to reprogram your unit.


Dec 04, 2007 | Motorola Mobility SLVR L7 Cellular Phone

3 Answers


Try putting the phone in a very warm dry place, ay in the "Hot water cupboard" for a day or so and this may drive out any moisture that may be causing the problems, also shake the phone vigorously B4 you do so to try and dislodge any moisture. Or you could try disassembly and wiping the keypad contacts, perhaps there is still moisture there, or maybe it has shorted something else which is why ya gotta dry it out completely.

Jul 14, 2007 | Sony Ericsson K750

Not finding what you are looking for?
Sony Ericsson K750i Cellular Phone Logo

Related Topics:

106 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Ericsson Cell Phones Experts

Damen Wong
Damen Wong

Level 3 Expert

1950 Answers


Level 3 Expert

13434 Answers

Zaid Anarwala
Zaid Anarwala

Level 3 Expert

457 Answers

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

Answer questions

Manuals & User Guides