SMS Small app allows you to send and read SMS without leaving your current activity. SMS Small app allows you to reply users from same screen, calling facility is also there. You can also change the background of the app if you like to from transparent to any wallpaper of your choice.
You need to give access to app for notifications under settings ( if you want to ). You must have android 4.3+ running on your Xperia device to run the app. We tested the app on Xperia Z2 and it seems working fine.
SMS Small app
Download SMS Small app from below Play Store link ( No Root needed ), version 1.0.5.
Like the app, let us know. Drop your comments below.