How can I get my data network working on my Galaxy S3 (Korean version)?

[AC Question]

data network not working on my gaxys s3 korean version !!!???

After factory rest my mobile stopped accessing data network !!
though of upgrading to 4.4.4..no data network only Wi Fi..any Solution.
The other issue Lte logo disappeared and squired shape appeared instead..any explanation !

 

[SpookDroid]

Re: data network not working on my gaxys s3 korean version !!!???

Did you load any special data configuration from your carrier when you first got the phone? If so, the factory reset wiped that configuration and you might need to re-enter it to gain access to the data network. I'm assuming you still have voice service, correct?