I have a motorola 4g lte ceo168 do not no how to get the back off of it

SOURCE: can the htc thunderbolt 4g Lte be sim unlocked, and if so how?

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.For details to obtain the PUK code for the SIM card, pleaseclick on this link and follow my instructions.
http://www.fixya.com/support/r5705889-puk_code

SOURCE: How can I getmy phone to turn back on?

Sounds like you need to take it back to the store and have them "flash" it for you. You may try removing the battery and replacing it after 1 minute.

SOURCE: i want to unlock my optus sky vega 4g lte mobile phone

I have a mobile of SKY company model no is IMA820L.MY phones IMEI no is 359245042302784.As 3G network is not working please tell me the unlocking process.Thank you

SOURCE: Free unlocking code for Playbook Lte (4g)?

There are no free unlock code available for Blackberry PlayBook LTE(4G) . But,You can get unlock code for cheap price from unBBlock.com . There you have to give your Country and current network name along with your IMEI number to get the unlock code. They will give you the unlock code along with instruction on how to unlock. Follow the instruction correctly and unlock your Blackberry PlayBook LTE(4G).

SOURCE: Sim/network/unlock codes and procedure to a

The unlock code are hidden and is not stored on the SIM Card.
There are many way to get it Carrier Network unlock.
1 - Phone carrier can unlock for you instantly $30-$50.
2- Service provider you have contract with phone carrier and they can unlock for you 2-24 hours for $5 - $125 due to they have to get unlock code for you.
3 - Service provider can hash the code by special programmer. that also cost $7- and up depend on model. some are required download their software and hook up USB cable to your phone.
4 - Buy another phone already unlocked.
5 - Just watch out for those scammer unlocker want you pay by Western Union or send your phone to them or paid by some way that you can get money back.
6. If you have purchase special unlock program to unlock it.
Good luck!