Question about Sony Ericsson K750i Cellular Phone

1 Answer

Sony Ericsson K750i

As soon as I insert a sim card with the contact details from another cell phone copied to the sim card, after switching the cell phone on, it searches, opends the profile screen, switches off and starts all over again. I am not able to switch the phone off. If the contacts are stored on the previous phone and not the sim card, this does not happen.

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.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 7,752 Answers
Re: Sony Ericsson K750i

You need to reflash the phone's firmware this can be done online at or take it to a mobile service center and have it done there

Posted on Feb 24, 2008

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

Unlok sim card

Use unlock code to unlock Sim card of your Sony Ericsson K750i. Get the code from the site ,and unlock it using unlocking instructions which is given in the site itself.

Apr 03, 2013 | Sony Ericsson K750i Cellular Phone

1 Answer

I cannot put other sim on my sony ericsson k750i pliz tell me is there is any way or reset code eargly wating for solution

If you cannot insert other Network Sim card in the Phone mean it locked to Network ,you need to unlock it.You can get the unlock code from here
and unlock it.

Oct 19, 2011 | Sony Ericsson K750i Cellular Phone

1 Answer

Plizz my phone is puk no.+6285743157355 my puk Sony Ericsson k750i ploizz

PUK stands for Personal Unblocking Key. This is a uniqueeight-digit code specific to your SIM card. This is required when the PINnumber to unlock your mobile phone is entered incorrectly 3 times. You are thengiven 10 attempts to enter your PUK code. If an incorrect PUK code is enteredafter the 10th attempt, you will block your SIM card permanently and willrequire a new SIM card from your mobile phone provider.
PUK codes can be obtained through the following ways - The PUK code is in your SIM card documentation Starter Pack.If you do not have this then -Please contact your phone service provider.
Your cell phone service provider can give you the PUK code once you give themyour account details and they have confirmed your identity.

Apr 16, 2011 | Sony Ericsson K750i Cellular Phone

1 Answer

I transferred all the phone numbers from my old sony ericsson cell phone to my sim card, but cannot figure out how to copy all the sim numbers onto my new sony ericsson vivas pro.

To transfer your contacts through the SIM card:
  1. Copy your contacts from your old phone to your SIM card. If you need help with this, please consult the old phone user guide.
  2. When the copying is done, move the SIM card to your new phone.
  3. Select Menu > Contacts.
  4. If the phone asks you to copy info from the SIM card, skip steps 5-10.
  5. Otherwise, tap Options > Settings > Contacts to display.
  6. Select SIM memory > OK, then tap Back.
  7. Tap Options > Mark/Unmark > Mark all.
  8. Tap Options > Copy > Phone memory.
  9. Tap Options > Settings > Contacts to display.
  10. Select Phone memory > OK, then tap Back.

Feb 28, 2011 | Sony Ericsson Vivaz Cell Phone

1 Answer

I can not import contacts from my old sim card into my new phone

its very eassy, u jst copy all contact details in ur phone or any other phone & insert ur new sim card, & again copy all contct into new sim card

Dec 31, 2010 | Sony Ericsson Cell Phones

1 Answer

K750i says insert correct is on orange network and have tried a working sim card for orange,o2,vodaphone and t/mobile.all give same response.any ideas regards mark

It sounds as if your SIM card is either expired, not activated or burnt to another number, Try it in another working Orange phone first, and then you can at least rule out a SIM problem.

Jul 21, 2009 | Sony Ericsson K750i Cellular Phone

1 Answer

Transfer all phone numbers from phone to sim card

u can not transfer all ur phone nos. but there is limit to do so. I think it is nearly 50 or 100.

Go to contacts--Options--Advance--Copy to Sim.

Jun 13, 2009 | Sony Ericsson K750i Cellular Phone

2 Answers

K750i "Insert SIM"

do all the contact pins on the phone reach the simcard?
you can try to pull them up a little bit carefully.

Apr 05, 2008 | Sony Ericsson K750i Cellular Phone

1 Answer

SE K750i displaying 'insert sim' even though sim is inside.

This problem is due to your phone's sim card IC malfunctioning. It may get damaged due to phone dropping gently into rough surface and its crystal structure may break due to it. for any queries mail to

Sep 01, 2007 | Sony Ericsson K750i Cellular Phone

2 Answers

Sony Ericsson K750i keyboard(?) malfunction

your fon might be dropped and that's the reason maybe the keypad IC get malfunctioned

Jul 04, 2007 | Sony Ericsson K750i Cellular Phone

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

Related Topics:

38 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Ericsson Cell Phones Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers


Level 3 Expert

18258 Answers


Level 3 Expert

6993 Answers

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

Answer questions

Manuals & User Guides