I have a 2 year old Sony Ericsson K550i phone which performed very well until I set it up for Bluetooth handsfree use in my car. Since then the microphone & ear piece have ceased to work & I can only take calls with the speaker switched on. Do you have a solution to my problem or could the Bluetooth handsfree setup not be the problem - maybe it was caused by something else, possibly a knock?

I bought a blackberry phone IMEI code 354529003408630 and has the keyboard, so I can not get year meniu.multumesc for help

If the phone is not able to set up or activate the bluetooth on the phone, try to reset the phone, if not the software must be reinstalled.

How did you Set up Bluetooth on the Sony Ericsson K800i ?was it set up properly?Sony Ericsson K800i has Bluetooth technology, which can connect to other Bluetooth devices like handsfree headsets, or let you easily swap files like pictures, ringtones, videos or contacts with other people for free. It works by looking for other Bluetooth devices nearby and then connects to them to wirelessly transfer files. this is the steps to seeting up bluetooth on k800i sony ericsson

• From the Menu screen, select Settings
• Scroll across to the Connectivity tab and select Bluetooth
• Scroll down to Phone Name and press select
• Enter the new name for your K800i
• Once you’ve done this, you can turn Bluetooth on to make you visible to other devices by following these steps
• From the Menu screen, select Settings
• Scroll across to the Connectivity tab and select Bluetooth
• Select Turn On

To connect your Sony Ericsson K800i to a handsfree device, enter the Bluetooth menu screen and select Handsfree, Your phone will then look for a handsfree device to connect to. When it’s found it, select the device and enter the passcode if required

According to the handbook, it is 1234

go to sony ericsson web site and you can down load the user mannual

hi.. sir
don't need to format the memory card..
1. just go tool> setting> phone>general>restore factroy setting or other setting install what found in ur cell. it will trouble shoot.. thank u sir ,any problem repley me. rate it

Hai, i too had this same problem friend.. I tried many ways and nothing worked.. Finally i got my mobile re-installed through a service center which made my bluetooth work again.. You also try the same .. Hope this solution would be help full.

Hi, (1) Press & hold the switch of the Bluetooth handfree. (2) Now search throw ur handset via blue tooth.

1) Make sure headset is off. 2) Press and hold the answer button until the light flashes green and red. 3) If it only flashes green, press and hold both volume buttons until the light lashes red and green. 4) It is now ready to pair: follow the instructions in the bluetooth menu of your phone. When asked for the passcode enter 0000. 5) All done.

Sorry but what do you mean by?:- 'The car unit will not allow me to use the colour previously used' It should be the phone with the memory and the search facility for finding your car headset device, not the device looking for the phone. Once you have searched for new devices and found the headset with a different phone, the headset will not be able to connect with more than one device and should lose the old phone connection.