Chosen Solution
The left side of the tablet (portrait) touches itself without anything touching it. I turned on Show Taps and saw 6-7 marks showing it’s getting touches from there. Also typing seems hard to press. Update (10/28/2020) SM-T387T is the model number
Hi @roeldocto , As I suggested you may have a digitizer problem and it has to be replaced as it cannot be repaired. Here’s a link to a supplier of the part. It is only shown to give you an idea of the cost of the part and what it looks like. There are other suppliers online that may suit you better. Just search for SM-T387T digitizer. I couldn’t find a repair video for the digitizer replacement but here’s a video for the screen replacement for a same series tablet which may help. If doing this yourself seems too daunting, contact a reputable, professional mobile phone repair service and ask for a quote to replace the digitizer.
