I haven't had any issues with a Samsung S7, Samsung S9 (although I broke HDMI output), and Sony Xperia 5 Mark II (very pleasant to repair). iPhones have been much more troublesome for me, as I have destroyed three during repair attempts. All the issues were from damage to ribbon cables, as they are fragile and easily damaged from being bent. So I'd advise avoiding devices with tight tolerances like iPhones, and minimizing interaction with ribbon cables.
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