TabLayout Tab Title text in Lower Case

If you add the following line to your TabLayout it should work:

app:tabTextAppearance="@android:style/TextAppearance.Widget.TabWidget"

Use it like this:

<android.support.design.widget.TabLayout
                    android:id="@+id/tabLayout"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    app:tabIndicatorColor="@android:color/white"
                    app:tabIndicatorHeight="2dp"
                    app:tabTextAppearance="@android:style/TextAppearance.Widget.TabWidget"
                    app:tabSelectedTextColor="@android:color/white"
                    app:tabTextColor="@android:color/white" />

You can just customize and make your title using below code,

 <android.support.design.widget.TabLayout
    android:id="@+id/tabs"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:tabIndicatorColor="@color/colorLightPink"
    app:tabMode="scrollable"
    app:tabSelectedTextColor="@color/colorLightPink"
    app:tabTextAppearance="@style/CustomTextAppearanceTab"
    app:tabTextColor="@color/colorGreyDark" /> 

CustomTextAppearanceTab defines the text style which is written in style.xml file

<style name="CustomTextAppearanceTab" parent="TextAppearance.Design.Tab">
    <item name="textAllCaps">false</item>
    <item name="android:textAllCaps">false</item>
</style>