On the other end think about how many leechers stroll in here and install any recovery (from any phone) and any rom (again from any phone) and cry when they over wrote their bootloader partition and have a hard brick. The carriers should have NO obligation to replace THEIR phones. On the other hand, denying replacement of a premature screen failure just because someone rooted their phone is ridiculous. It's a double edged sword but I'm willing to put money on betting that more people screw up their phones up out of pure ignorance than those who deserve a legit replacement.
Locked bootloaders help prevent bricks unless you're trying to find exploits, which then you already know the risks of bricking. I'm talking about a HARD brick. No boot, no recovery, no Odin mode. A soft brick can be solved by a 3 minute search on Google. Too many times have I seen people bash locked bootloaders over soft bricks...
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