Please try this in your index.html file
I tried the below html code in
ionic 4
and it works
Use the below one for getting styled your apk same as ios.
<html lang=“en” dir=“ltr” class=“plt-iphone plt-ios plt-phablet plt-mobile ios” mode=“ios”>
Use the below one for getting styled your ios app same as android.
<html lang=“en” dir=“ltr” class=“plt-android plt-mobile md” mode=“md”>