Google allow adsense 300 x 250 Above The Fold for mobile banner size

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Before Google Adsense warn publisher to avoid publishers placing adsense above the fold for mobile layout and  make sure in mind that content is king so adsense display all in your blogpost full with adsense ads in blog post. And now google permite to make standard banner size for mobile can use adsense 300 x 250 above the fold but you must look for mobile layout size so content not to push to bellow so content not showing in above the fold you can try responsive adsense ads whatever for mobile ads or desktop ads above the fold. Andsense above the fold is potential for click and increasing click through rates, normal ctr for adsense is below 10%.

But now, google permite placing adsense in mobile with 300 x 250 banner size. But publisher must atention the ads do not annoy, distract, or result in ad performance issues and don't push the conten below the post.
Google didn't give example placing this size in above the fold for high end mobile size.
But i think this size can be implement in mobile like iphone, samsung galaxy s8 or s8+, etc which size in 375 px width, the content can be see in above the fold and not causing performance isue.
Google said Publisher must be focus in mobile web design, Good Contents and placing ads.