Other Do iPhone have permanent bugs?

[TechNismo]

Is it possible for an iPhone software to have a permanent bug/malware? Like even after factory restoring the phone, the bug can remain?
If yes, is it possible to transfer the bug to another iPhone, by putting a back up of the permanent bug iPhone to the new iPhone?

 

[joeblow7777]

Can you be more specific about the bug/malware?

For what it's worth, I've never heard a credible report of actual malware on an iOS device.

 

[mtneer]

If there is a bug in iOS that will carry over to every iPhone you own - whether you restore from backup or setup as new on that particular version of iOS. Only way to fix is to wait for an update from Apple in a future iOS release since Apple won't let you downgrade to an earlier version of iOS that may not have the bug.

 

[BrianBaughn]

A client had an iPad that wouldn't "ring" on incoming FaceTime calls. I restored as new and FT ringing worked. I then restored from a backup and it stopped working again. Apparently, the backup restore brought back a corrupted preference file or similar.

If that's the kind of thing you mean...yes.

 

[DeltaMac]

A hardware fault won't transfer to another iPhone.
For software, if you do a factory restore, a new system gets downloaded from a trusted source - from Apple's servers. That downloaded system would be verified as part of the download. I don't think it is possible for the system to be modified during that process with some kind of malware, even if it were possible for iOS to take on malware/virus. Just won't happen.
If you do a restore, then use that as a new install. The restore process would reinstall from a fresh download of the most recent version of iOS for your device.
Then, if you really don't want to trust the backup that you might have - then ignore the backup, and simply reinstall your apps manually.

 

[jav6454]

Is it possible for an iPhone software to have a permanent bug/malware? Like even after factory restoring the phone, the bug can remain?
If yes, is it possible to transfer the bug to another iPhone, by putting a back up of the permanent bug iPhone to the new iPhone?

Something like Spectre is certainly possible.

For those who don't know, the 1st Gen iPhone and 1st batches of the iPhone 3G and iPhone 3GS were compromised due to a hardware level exploit that still works and can never be patched.

That is how the Pwnage Tool was born and how BootNeuter worked on the 1st Gen iPhone. BN didn't work on the 3G and 3GS due to new Infineon modems at the time.