The images don't need to be resized.
However you'll have to modify the layout. But this will be a task.
First you'll have to find out which layout it is that contains those three buttons.
The way I narrow my search down is, I go into red/drawable-hdpi/xhdpi/xxhdpi or whatever the resolution is. And look for those icons. Once you find the dialer, phone and contact add icon. Copy the names of these .png's to something then using one of the .png's copy the name and in the layouts folder. Search the images name. This will narrow down the layout.xml's and then from there you can find it. Once you find the layout.
There will be three lines that determine the images, you can fix the layouts by using the following code.
Change the first one to where you want to button to be displayed so if its on the right side make it "right|center" or "center|right"
Hopefully I helped.
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