My new A52 4G lasts a maximum of 5 hours while surfing...I have already reset to factory settings and activated all the optimisation regarding adaptive use and deep standby for 97% of the apps as well as deactivated near by and other Google services. This is not normal!!! While I am reading articles on the internet with the app Samsung Internet (no music or videos in the background) 1% battery charge drops after about every 4 minutes....