Does unrooting lock phone to original network?

[Stratocaster3]

Hi guys,

I'm about to unroot my I9300 back to the stock firmware.

The phone was originally locked to Three network but has since been unlocked. If I unroot to the stock firmware will the phone be 'relocked' to Three network like it originally was or will I be able to continue using my Talk mobile sim card?

Thanks a lot, your help will be appreciated

 

[GTWalling]

Once a phone is Sim Unlocked it will remain that way regardless of the OS or Root.

 

[John Khurt Correa]

Hi currenlty im using Samsung Galaxy note 3 SM n900T from tmobile and they said that my phone is currently rooted, and i cant do the updating of my os still on the 4.3 jellybean i want to update this manually, if im going to unroot this?? Will that be possible that my phone will be stored on the original carrier?? Tmobile?? Im using this phone right now here in manila philippines please help me this was the first time that im using android phone