Question about Sony Ericsson P990i Cellular Phone

SIM card from old phone won't work in new phone

The SIM card from my old Cingular phone won't work when I insert it into my Sony Ericsson P990i. The Sony phone is unlocked. Do I need a special kind of SIM card? I am not very technical so this may be a silly question.

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91 Answers

How old is your current SIM-card ? There was a change in operating-voltage on the SIM-cards and its a known issue that the P990i wont accept "older" cards. Contact your provider and get a newer card. You could perhaps try one of your friends SIM-cards in your phone, before ordering a new one, if the card is newer than the one you have.

Posted on Oct 05, 2007

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My sony ericson p990i the problem insert sim how to solve it,,???

Hello

This Problem can be caused if the Sim slot in the phone is not tight enough.

Try removing the Sim card and replace it ensure you press very hard to make it stay in place so that the chip on the Sim card touches the Sim card panel on your phone.

If this does not work then the Sim holder is faulty and it needs to be replaced and you wont experience the problem anymore

Goodluck

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If you want to unlock the Sony to use it with a different phone provider then this may help you.
When you place a new or a existing SIM card from another phone provider into your mobile phone and it asks for a Security code then :-
This phone is locked to the original mobile phone provider. You need to contact this mobile provider to ask for the unlock code (security code) for this phone. You need to provide proof of ownership etc and the phone's unique IMEI number which is located inside the phone under the battery. They use this number to generate the unlock code for your phone.
They should provide you with instructions on how to enter this code into the phone.
Once you unlock the phone, then you can insert a new SIM card in this phone or sign up with another phone provider using this phone.
You could ring the phone provider and ask for the unlock security code because you are going overseas and wish to use your phone with a prepaid SIM card from another country. This maybe a free service.
The other way to get your phone unlock is to use a phone unlocking company on the Internet, they usually charge a couple of Dollars for their services. Use Google and search for "Security unlocking code” companies in your area.
You can also try this WEB site :-
http://www.mobileunlockguide.com/mobile-phone/

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i do have a sony ericsson p990i phone and it has a couple of virus in it's internal memory and it has to be delleted, do you have any software/s for it to be delleted a free downloads to be precised? i hope you could help me... thanks a lot guys!

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First need to find the IMEI for your phone. Power on phone and type *#06# this will display the IMEI. You will need the IMEI to get the corresponding unlock code. Every phone has a different unlock code. Then call your provider and request the unlock code.

Sony Ericsson - General
Step
Action
1
Insert non-Cingular SIM card
2
Power on the handset
3
Press the left Arrow (<) button
4
Press the star (*) button twice
5
Press the left Arrow (<) button

- display will indicate "ME Lock"

- wait approximately 3 seconds

- the display will indicate "Network" and a picture of a closed lock
6
Press Yes

- the display will indicate "Unlock?"
7
Press Yes

- the display will indicate "Enter NCK"
8
Enter the SIM Unlock code
9
Press Yes

The handset will display "Network" and a picture of an open lock for three seconds and will then revert to the main display.

The handset is then successfully unlocked.

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