That's because the S9+ has 6GB of RAM while the S9 has 4GB. Now, they both have a lot of RAM. But the S9+ will let you cycle through more apps without losing your state. We found the dividing line to be at about seven apps. Loading five apps in a row and cycling, the phones performed the same. But loading seven apps in a row, and then cycling back to the first one, the second app demanded that I log in again and then the rest of them appeared a little bit slower on the S9 because they had to restore themselves from flash storage rather than RAM.
Method to
recover contacts from samsung s9:
Samsung Data Recovery supports all kinds and brands of Android mobile phones, such as Xiaomi, Samsung, Oppo, Vivo, Huawei, HTC,LG and more. With the help of Android Data Recovery, you are able to preview all deleted text messages from samsung s9 before recovery, and you can selectively choose the data which you want to get back.
More info;
Recover lost data from samsung s9
