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Hi Svim,There are very few universal secret codes that will work with every phone, there simply are too many different hardware configurations in different models of different brands. The codes are more hardware/firmware based so Lollipop isn't the issue. You could try experimenting by eliminating some of those symbolic characters but it's really, really important to keep in mind these codes can alter a lot of lower level things on your phone, including wiping the user partition (your data). If you got your info from a site that said that code works on all phones, stop relying on that site as its author has questionable validity. Best to avoid anything saying '...these will work on everything...' and find a source specifically referencing your phone.
Hi,What sort of power button behavior are you trying to change?