Galaxy SGH 1337. How do I change the imei #?

H Derek. The i747 is a gaalxy S3, if I'm not wrong.
OK, when you post the qeustion sking that you need help to jailbreak an Android device, believe me, you will hardly get help from the community. This will send a message to the Androids fan that it must be your first time trying to root an Android device.
I will leave a link here for you to read which it will explain step by step on how to root your device with Kingroot. A another one with everything from root to flashing and customizing.

http://forums.androidcentral.com/t-galaxy-s-iii-rooting-rom-s-hack-s/466427-guide-how-root-t-galaxy-s3-sgh-i747-m-kingo-android-root.html

http://galaxys3root.com/category/galaxy-s3-root/

It's not your phone, it's the AT&T wireless network.

Something came loose when putting the casing back together

you will need to get a phone unlock code or "puk" from the telco

Here

sgh s730m imei#35505905112729503 need unlock sim code please

You can get the Unlock code for SAMSUNG SGH T369 at
Mobile-unlocker.com/samsung-sgh-t369/rs2wp9/ and Unlock it easily....

Whats the code required to unlock the samsung SGH-T239 Phone IME # 011841 00 030683/101

hi,
THIS CODE WILL UNLOCK ALL OF THE NEW MODEL SAMSUNG PHONES EXCEPT SMART PHONES. (X495-AND UP)

*7465625*638*00000000*00000000#
NEXT ENTER
#7465625*638*00000000#
AND THEN *#7465625# to check the locks....all locks are inactive...these are all the locks...
network lock - inactive
subset lock - inactive
sp lock - inactive
cp lock - inactive
sim lock - inactive
activa lock - inactive
phone lock - inactive
auto network - inactive
auto subset lock - inactive
auto sp lock - inactive
auto cp lock - inactive
auto sim lock - inactive

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can any give me the sim lock for samsung e335 and phone lock lock # thank you