Will an at&t unlocked deviced be locked again with an upgrade.

A

AC Question

I m using an at&t unlocked device running adroid 5.0. What if i upgrade it with android 6.0 [obviously it has to be at&t customized android 6]? Will it become again locked or be unlocked even after the upgrade?
 

Ry

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I m using an at&t unlocked device running adroid 5.0. What if i upgrade it with android 6.0 [obviously it has to be at&t customized android 6]? Will it become again locked or be unlocked even after the upgrade?

Are you referring to SIM unlocking or bootloader unlocking?