The Z1 compact comes default with kitkat 4.4.2. How do I check the panel_id without root? I just need to find out whether it is a JDI or AUO panel. This can be done easily in 4.3 and now I am getting permission denied when trying to open the /sys/devices/mdss_dsi_panel/panel_id file. Any help would be appreciated. Do I need to downgrade to 4.3 in order to check this and then flash back 4.4.2?
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