Opening multiple tabs in Safari, especially background tabs, will consume system resources and drain your iPhone's battery. Especially when you set Safari to open all links in new tabs, users may forget which tabs they have opened. Safari has a feature that automatically closes all old open tabs after a specific period of time, reducing the amount of space Safari uses. Below are instructions for automatically closing old Safari tabs
How to automatically close old tabs on iPhone Safari
Step 1:
Users access the Settings application on iPhone then click Safari application to adjust. Switch to the browser setup interface, the user clicks set Close tabs to adjust.


Step 2:
The user then proceeds Old tab auto time option on Safari with times as listed below. You choose the time for Safari to automatically close old tabs after unused time.


Instructions for turning off old tabs automatically on Safari Mac
On your Mac, click on Safari and then select Settings. Switching to the new interface, users click on Tabs and then look below, in the Automatically close tabs section, we select the time we want to automatically close the old tab on Safari Mac.