T mobile samsung sgh t809 to update for any sim

You get a PAC number from the SIM card provider, just call them and ask for the number, or in some cases you can log into your accountant get it that way.

TO ACCESS INTERNET ON YOUR MOBILE YOU SHOULD HAVE

1. GPRS ENABLED DEVICES.
2. WORKING GPRS NETWORK.

FIRST OF OF ALL YOU HAVE TO CALL YOUR SERVICE PROVIDER TO ACTIVATE GPRS ON YOUR SIM CARD (YOUR NAME SUGGEST THAT YOU ARE FROM INDIA SO IF YOU HAVE AIRTEL SIM THEN DIAL *567# OR HAVE TATA DOCOMO SIM THEN DIAL *141# TO ACTIVATE GPRS BY YOURSELF.)
AFTER GPRS ACTIVATION AGAIN CALL CUSTOMER CARE AND ASK THEM TO SEND SETTING ON YOUR DEVICE(IN AIRTEL SEND "MO" TO 543210 FOR TATA DOCOMO SEND "INTERNET" TO 52270)
AFTER RECEIVING SETTING SET THEM AS DEFAULT SETTING.
NOW OPEN YOUR BROWSER AND ENJOY SURFING AND DOWNLOADING.
THANK FOR USING FIXYA

If your IMEI is coming up as 00000 0000 000 then your phone is essentially a brick. No codes or new sim cards will change this, plus no phone retailer or mobile unlocking business in your high street is going to go anywhere near it because they will be scared that its a stolen handest.

The only solution is to plead with someone in a mobile phone shop that you followed an idiots advice on the internet and typed the code *#7337# and reset your IMEI and you want it changed to the original IMEI on the back of your handest, or possibly send the phone back to the retailer. Will cost at least £20 to sort this out and allot of hassle im afraid to anyone who has done this.

i have this prolem too. i use a condemn battery, when the battery is full, network ok but when the battery started to less and little, limited service... i think you should replace the battery..

try to remove call barring

this is the same thing they always tell you when you call customer care, shut off the phone, take out the battery (and sim card) wait 1 minute, put it all back together and make sure the sim card and memory card are secured in than turn on your phone.. see if that works

download it via the phone's wap browser.

i have a mobile of samsung hero its a cdma mobile of a celluler company and i want to use new  same celluler company's new sim card in this mobile.if i had use that sim in this cellphone then it shows "MIN out of range, enter valid card"then how can i use that sim on this phone.

I managed to make the following work for my Samsung SGH-T209 locked to the T-Mobile network. Credit goes to toolnut43 (http://forums.afterdawn.com/thread_view.cfm/462229#2821568)

Posted as follows:
Try this

1. Insert other providers sim
2. *2767*3855# wait for your phone to reboot(restart)
3. *7465625*638*00000000*00000000# (this changes network lock w/password 00000000)
4. #7465625*638*00000000# (this deactivates network lock w/00000000)
5. *#7465625# to check all locks
If all are inactive, then you are good to go.
u can unlock x495.x497.x660.t509.t809 and latest, plus of course T-209.

Enjoy!