I purchased sony xperia xa1 plus 1 month before and from then two updates came i installed them but nowadays few times when i lock the phone then suddenly it unlocks without any effort. And it happens for 5-6 times and then it locks. This doesn't happens always but sometimes it happens and it is more frequent. Now today i faced one more issue that when i took my phone i pressed the fingerprint sensor with another finger which is not set for sensing then also it unlocked and surprisingly it was unlocked from before and only display wad turned off. Everything in this phone is awesome but these security issues are a big thing to deal with. Please sony i believed on you then you maintain my believe and give any update soon to fix this problem.
