Even the most reliable smartphones can "glitch" or slow down, so from time to time you need to take the device back to its factory settings. This will help get rid of the trash and restart the system, which has a positive effect on its performance. Resetting an iPhone's configuration involves restoring the internal operating system as it was when you first started using the device. For this reason, you’ll have to set many options in advance. This also applies to eSIM activation. The connection process is not time-consuming, and the eSIM plan maintains the same balance as before the reboot.