I bought an iPhone 6s via Gumtree and picked it up last week but after I restore and update it to the latest sw, i was stuck at the Activation Lock screen which require the previous owners icloud details. I tried to reach out to the seller but it seems to be off; went directly to voice mail. I went to the apple store and they just ask me to reach out to the seller to have it unlocked.
Anyone has any solution or know where i can resolve this issue ? Thanks.
Good Luck. Now you have Apple Brick.