@chocola going by your description alone, it does sound like a broken LCD. You can post some pictures of what your screen shows with your question. Use this guide for that [guide|21499] That will allow us to see what you see. Looks like the display assembly is available at places [https://www.ebay.com/itm/Black-LCD-w-Touch-Screen-Unit-Tool-for-Doogee-Valencia-2-Y100-Plus-5-5-ZJLQ152-/192408662462?_trksid=p2385738.m4383.l4275.c10|like this] and [https://www.aliexpress.com/item/For-Doogee-y100-plus-LCD-Display-Touch-Screen-Digitizer-Assembly-replacement/32823066256.html|others.]