Have been trying for 3 days...called DJI tech assistance and follow all instructions including downgrading my iOS system from 11.2.6 to 11.2.5 (this took almost and entire day since you have to create a complete backup and then downgrade most of your applications on the phone. After all that, I try to connect (yes, the bluetooth on the phone "see" the OSMO) and when I get to the "activate" button on the app I receive the message "invalid device." And, of course, the OSMO is turned on and fully charged. I think my unit is DOA and am considering returning it to the Apple store where I purchased it. Before I do that...does anyone have any other suggestions. By the way, one of the techs asked me to take a photo of the error message because he didn't recall ever seeing it before (seems strange they would not be familiar with their own error messages.

Did you use the DJI GO app dropdown list to select OSMO Mobile 2 before you tried to connect?

Hi, there. Please tell me the SN number of your osmo mobile and provide a screenshot about the situation for further check. Thanks for your support.

BobWinNV Posted at 2018-2-23 23:01
Did you use the DJI GO app dropdown list to select OSMO Mobile 2 before you tried to connect?

Yes I did. Went through the process several times.

CoastalRick Posted at 2018-2-24 09:33
Yes I did. Went through the process several times.

Do you already have it connected to another phone?  It will not connect if it is already paired with another phone.  I normally just shut off the other phone and then it works.

BobWinNV Posted at 2018-2-23 23:01
Did you use the DJI GO app dropdown list to select OSMO Mobile 2 before you tried to connect?

Yes I did...

BobWinNV Posted at 2018-2-24 11:16
Do you already have it connected to another phone?  It will not connect if it is already paired with another phone.  I normally just shut off the other phone and then it works.

No it is not (and never been) connected to any other phone or device.

DJI Elektra Posted at 2018-2-24 00:12
Hi, there. Please tell me the SN number of your osmo mobile and provide a screenshot about the situation for further check. Thanks for your support.

https://forum22.djicdn.com/data/attachment/forum/file:///Users/rickvalasek/Downloads/IMG_1731%20(1).PNG error message which reads: "invalid device" SN is 198DF1R002006G

CoastalRick Posted at 2018-2-24 11:26
[view_image] error message which reads: "invalid device" SN is 198DF1R002006G

Thanks for your update. I would forward it to our designated department to deal with it.

DOA is your best choice.

I had a similar issue in the beginning the app would not detect the om2.  I went to the Bluetooth settings on my iphone and selected forget this device a couple of times until it worked.  It still does it once in a while and won't connect but in my case I only use the app for hyperlapses.  For everything else, I use Filmicpro and still it isn't perfect.  I was getting more noticeable jitter recording on the DJI Go app.  My advice, is try to swap it for a new one.  You shouldn't have to be downgrading your phone's firmware to use any device.  I still believe the DJI Go app is glitchy.  Save the headache and get a replacement.   

@ all: Thank you, everybody, for your advise and contribution.

This is what I did:
        •        Factory-restore iPhone
        •        upload DJI Go and connect OM2
        •        shoot a test-video…..
        •        transfer via DJI Editor WORKS       
        •        Re-install my apps from back-up
        •        do all the settings, scans of Touch-fingerprints, credit-cards etc.etc.
        •        Open DJI GO and start OM2
        •        OM2 fails to connect with app (in spite that iPhone is connected to OM2)
        •        Restart iPhone, no connection between app and gimbal
        •        Remove DJI Go app from iPhone and reload from app store
        •        Connection works, but red button to start video-record does no function
        •        Manually taken video does not transfer via DJI Editor

Start from scratch
        •        Factory-restore iPhone
        •        upload DJI Go and connect OM2
        •        shoot a test-video…..
        •        transfer via DJI Editor WORKS
        •        Re-install my apps from an older back-up (done prior of OM2 purchase)
        •        do all the settings, scans of touch-fingerprints, credit-cards etc.etc.
        •        Open DJI GO and start OM2, all connections work
        •        shoot a test video
        •        transfer via DJI Editor does NOT WORK (Failed to save file…)

All day waisted....meanwhile still no response from DJI support....am I surprised?

@Joemar7
Followed your advise to on-connect and then reconnect OM2 five times....didn't work.
Will follow your advise and return the gimbal for replacement, although I cannot imagine that the hardware triggers the issue...must be the app IMO.

Thanks guys.

(Above for the record, just in case anyone else has the same issue)