1. jkmasi's Avatar
    When I open the phone app or contacts app on my iPhone 6S, the screen freezes, then the app usually just closes. I can't navigate between tabs (favorites, recent, contacts, voice mail). Sometimes, the screen freezes for a minute and then becomes responsive again, rather than just closing. It's very annoying. I have to remember to swipe the app completely closed after use in order for it to work properly. This never happened before I upgraded to ios10.

    Also, twice a day or so, I get the white spinner when I press home to either wake my phone or go back to home screen.

    Any suggestions as to what might be causing these problems and/or how to fix them would be appreciated. I tried a restore, and it didn't help.
    10-10-2016 04:39 PM
  2. Just_Me_D's Avatar
    I recommend you put your device in DFU mode, connect it to your computer, and then select to restore and update it via iTunes. Afterwards, set it up as new. Before you do that, you can try going to Settings → General → Reset, and then select "Reset All Settings" to see if that helps.
    10-10-2016 05:12 PM
  3. jkmasi's Avatar
    I was afraid that might be the answer. I've seen suggestions on the apple support forum that the contacts app freezing can be solved by not syncing contacts from any Exchange or GMail accounts. To me, that defeats the purpose of a smart phone!
    10-10-2016 08:46 PM
  4. MarsOlson's Avatar
    Did you update to iOS 10.. cuz I have the same problem after I updated to ios 10!
    10-13-2016 03:59 AM
  5. jkmasi's Avatar
    Yes. I am on 10.0.2 but it's been happening since I updated to 10. I haven't had time to try the DFU reset/set up as new suggestion above. Based on other reports I have read, that doesn't always solve the problem. However, as soon as I get a couple of free hours, I am going to try it.
    10-13-2016 06:36 AM
  6. Sherry_B's Avatar
    I have the same problem after I updated to ios 10!
    Yes. I am on 10.0.2 but it's been happening since I updated to 10. I
    Sometimes, but not always, when there is an update and old system files are overwritten with new system files, file corruption can occur. When this happens you get odd behavior with some apps, or they just crash upon opening and won't run at all. The only way to fix corrupted files is with a clean install of the operating system.

    Make a backup using iTunes (remember to use the Encrypted backup feature if you want your health data, wi-fi passwords etc, backed up), and then factory reset the phone. Once you've completed the factory reset and gone through the initial setup of the phone then you can use iTunes to restore your phone (ie; it'll seem like you never reset the phone even though you did).
    scruffypig likes this.
    10-13-2016 11:51 AM
  7. MarsOlson's Avatar
    Must be caused by iOS 10, cause My iPhone does! Try to hard reboot.
    10-14-2016 01:03 AM
  8. nikkimd11's Avatar
    Yup I am having the same issue on my iPhone 6s ever since I updated to ios10. It's not something that is occurring all the time but curiously it's happened with the two apps I use the most: phone app and messages. So it is quite annoying and the only way it gets fixed is with a hard reboot. I hadn't updated to 10.0.2 though maybe that would fix it but now I see it's happening on 10.0.2 for others. I'm going to end up doing a fresh reinstall to see if this will fix it.
    10-14-2016 08:39 AM
  9. nikkimd11's Avatar
    Yes. I am on 10.0.2 but it's been happening since I updated to 10. I haven't had time to try the DFU reset/set up as new suggestion above. Based on other reports I have read, that doesn't always solve the problem. However, as soon as I get a couple of free hours, I am going to try it.
    Yesterday I went ahead and did a fresh restore setting up my phone as new after backing up my device and the issues I had been having so far have been fixed. Hope this works for you too.
    10-15-2016 07:43 AM
  10. jkmasi's Avatar
    Make a backup using iTunes (remember to use the Encrypted backup feature if you want your health data, wi-fi passwords etc, backed up), and then factory reset the phone. Once you've completed the factory reset and gone through the initial setup of the phone then you can use iTunes to restore your phone (ie; it'll seem like you never reset the phone even though you did).
    So, first set up as new, then restore from iTunes backup?
    10-28-2016 12:03 PM
  11. Sherry_B's Avatar
    So, first set up as new, then restore from iTunes backup?

    Do your iTunes backup first (remember to use the encrypted feature), then reset. Go through everything to set your phone up like new. Then restore from backup.
    jkmasi likes this.
    10-28-2016 02:28 PM
  12. jkmasi's Avatar
    I still haven't had a second to do the set up as new restore process yet, but I think I may have found the culprit. After reading about this issue on the Apple support forums and other places, I tried turning off contacts sync for my work Exchange email account and I haven't had the freeze since. Sigh... not sure why this is suddenly an issue for me in ios10 - I have had those contacts sync'd for quite a while without issue. So, my plan now that 10.1 is out is I will backup, set up as new in iTunes, restore from backup, then turn the contacts sync on for that account and test.
    10-30-2016 11:02 AM

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