[Q] Root Z2 without unlock bootloader
Not just asking Z2, but for other android phones too. Just out of curiosity, how does it usually take for the xda devs to achieve root a phone without unlocking bootloader? I know it depends, but just wanted to get a general idea. Like it take 6 months for phone A, and 4 months for phone B. Is this period getting shorter, longer, or pretty much the same? Thanks.