Completely disabling location services on iPhone

Soldato
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I'm probably being daft, but I have no iPhone to test with. Does the 'Location Services' slider in Privacy settings really disable all location tracking?

My sister is in a tricky situation. She left her partner and has been convinced for a while that he has something (not just family sharing type stuff) on her phone that is giving him access to her location and maybe more.

She's been advised by the folk dealing with her escape to a refuge not to turn on her old phone to preserve potential evidence on it, and protect her location being accidentally divulged. But two factor authentication requirements keep leading her back to needing to use it. She doesn't have hard copy backup keys for Gmail (I should have thought of all this when she started muttering about leaving him!) and the backup email address requires similar 2FA leading back to the iPhone. So it's a bit of a Catch22 at present.

I suggested she travel as far as she can from her current location (even I don't know where she is), turn on the phone for long enough to get backup keys written down, then use that and her login info to start again with a new Android device. But I'm wondering if it would be easier to go somewhere like a stair well with no service (tricky to prove until it's turned on), or at least bad service slowing network connection, and use the Location Services button... then relax. Of course location info might be required for logging onto some services, but that's a different matter.

Anyway, feel daft asking stuff like this when I've watched all the Jason Bourne movies and the net's full of privacy discussion, but I feel the need to crowd-source this. I don't want to make her situation more stressful than it already it, and she has no internet access for research until the local library opens again tomorrow.
 
The only way I believe is through find my friends, if that's not sharing then unless you deliberately share location through Facebook Messenger, Whatsapp or similar app, I'm not sure how he could be tracking her. Check all apps on the phone but disabling location should disable it for all apps as it's a global setting.
 
If its an iPhone and hasn't been jail broken you can't run unsigned code so nothing can run without being installed from the app store. Virus scanners are a red herring if they even exist on iOS.

The usual way that someone can track the location of the phone is to use find my phone, find my friends, some kind of parental controls app or the user inadvertently sharing it on the socials. Turning off location services will deal with the latter and any other apps like Facebook that 'share' your location. You'll want to manually turn off find my phone as well just in case he has her Apple ID credentials. In fact just resetting the phone to factory will clear out everything and it essentially becomes as it was in the box, include all user credentials.

Settings > General > Reset > Erase All Content and Settings

There is no need to drive to a far away location either to disable the location tracking, just get out of range of any wifi network and take out the sim card so there is no way for the phone to communicate out. Turn it on, disable location tracking, pop the sim back in, do the 2FA to get email access and then just reset the phone to factory.

Then set the phone back up with a clean (new) Apple ID and clean (new) email address, job done, no need to bin the phone if it works. Getting a new sim card and phone number would also be prudent under the circumstance.
 
Thanks all. My sister's not particularly technically competent, but whipping the SIM card occurred to me earlier (why it didn't earlier I've no idea, though not having had a decent night's kip for four months might have something to do with it!) and I've passed it on. I don't know if it's a recent enough iPhone/OS version to be jailbreak-proof, but her other half is definitely nerdy enough to have done it, if possible.

Who knows for sure. I do know I'm grateful for the feedback though everyone.
 
Most jailbrakes are tethered these days, meaning if you turn the phone off and on you lose the jailbreak.

Resetting the phone deals with all that as well.
 
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