UPDATE
Purchased a new phone for testing!

The new phone triggers all events. 👍

The new phone is only using Wi-FI (the same wifi & network used for testing all the above cases)

 

possible insight: Is the cause device specific?

 

Example #1A

Org name:  wolf*******

Session ID: 1744685779462 [2025-04-15 03:00:14.133000]

• This session worked good.. logged all events that I can see

Device Family: Samsung Phone [Samsung Galaxy A16 5G]

Version:  5.10.12

Library:   amplitude-analytics-android/1.20.5

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UPDATE #2

• Using the new phone (Samsung Galaxy A16 5G)

possible insight: Does not see to be device specific…. Is it ORG specific?

 

Example #1A (above. Additional details)

Process/Steps: I created a new account, which created a new USER ID in Amplitude.

 

Example #2A

Org name:  eev*****

Session ID: 1744831577954 [Apr 16, 3:26:18 PM EDT]

• PROBLEM HERE this session did NOT work good.. only first 4 events showed up, nothing after that

Device Family: Samsung Phone [Samsung Galaxy A16 5G]

Version:  1.1.12

Library:   amplitude-react-native-ts/1.4.13

Process/Steps: I logged into an existing account from the previous device, so it used a existing USER ID in Amplitude.

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UPDATE #3

• Using another new phone [Apple iPhone 12]

possible insight: Possibly Library specific?

 

Example #2B

Org name:  eev*****

Session ID: 1744854507775 [Apr 16, 9:48:28 PM EDT]

• PROBLEM HERE this session did NOT work good.. only first 4 events showed up, nothing after that

Device Family: Apple iPhone 12 [Samsung Galaxy A16 5G]

Version:  1.1.12

Library:   amplitude-react-native-ts/1.4.13

Process/Steps: new account created

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Hi Adrian,

Thank you for your patience!

To make sure I am understanding correctly, you are using new phones that seem to be working better. However, you are still having issues with the library **amplitude-react-native-ts/1.4.13** on the phones Apple iPhone 12 and Samsung Galaxy A16 5G for the org eev*****.

Is this correct? If so, could you please let me know what Org ID and Project ID this is happening in for the org eev*****? If you could also let me know which app I can download to test this out myself, that'd also be very helpful.

If you prefer not to share this information in a Community post, feel free to create a new ticket at https://support.amplitude.com/.

Best regards,
Audrey


P.S. Checkout upcoming events and user meetups on our events page.

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​@liuaud 

I am not exactly sure where the issue is. The more I look into things, it might not be a library or device issue, it might be a Amplitude data issue? Or an org issues?

 

org id: 281186

org name: eeva (you can download app from eeva.ai website)

chart: ghmazwdp

• On this chart, you can see data dropped off on Apr 10th. 
• If you view Apr 15th as a example, you will see
  • there are 15 unique users
  • they ALL only have the first 4 events each
  • the library did not change between the dates…. so I don’t think its a library issue anymore

 

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Hi Adrian,

Thank you for sending that over. Could you confirm if there have been any code changes made recently by your team?

To help troubleshoot further, would you mind walking me through an example user flow that should trigger the events in this chart? https://app.amplitude.com/analytics/eeva/chart/ghmazwdp/edit/o3c8r951

If you could send a screenshot or code snippet of how you are sending these events, that'd also be really helpful.

Best,
Audrey


P.S. Checkout upcoming events and user meetups on our events page.

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hi ​@liuaud 

Thank you for your time and replies!
 

Here is a updated chart
https://app.amplitude.com/analytics/eeva/chart/new/k62wauwt

• On this chart, you will see the events and data feed worked well, and stopped April 10th
• No, I don’t belive there any code changes
  • the app was published to the app store
  • the events were triggered within the app
  • the library used was not changed (because it was published to the store)
• this is app version 1.1.12 (released Mar 18)
• The release had library amplitude-react-native-ts/1.4.13

 

I am also facing the exact same issue on a different organization [org id/name: 140246 / wolf mask ]

different company, different mobile app, different platform (flutter), different library 

• https://app.amplitude.com/analytics/wolfmask/chart/new/phl4ugd2
• for this ORG, starting having the problem around March 26th

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Hi Adrian,

Thank you for your patience! For the Eeva org, I looked up the raw requests (attached below) for an example user that had this issue: https://app.amplitude.com/analytics/eeva/project/639837/search/amplitude_id%3D1009258949206/activity?_source=user%20streams&sessionHandle=ZYevxCU_ZYevxCU_Or8hWpW_CcNd_bdc94214-5e01-4437-89f8-5d34bae4ab8e&eventId=99813d7a-aecc-4202-a47e-309ae1ac48bb

It looks like we did receive events like API Success, but for some reason, these events are not showing up in the UI. This is unexpected, and our engineering team is looking into this. I will get back to you as soon as possible once the problem has been resolved. Appreciate your patience, and sorry about the inconvenience!

As for the Wolf Mask org, unfortunately we can't look up raw requests for more than 3 weeks back. Do you have a more recent example of a user where you would expect to see events but do not?

Lastly, it looks like both of these orgs are on our Free plans, but this ticket was marked as Plus. If the orgs are indeed on Free plans, we ask that you please submit tickets with the correct plan type in the future.

Best regards,
Audrey


P.S. Checkout upcoming events and user meetups on our events page.

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Hi Adrian,

Thank you for your patience!

Our Engineering team has informed me that the only dropped events around Apr 10 were due to deduplication. For context, Amplitude ignores subsequent events sent with the same `insert_id` on the same `device_id` (if the event has a `device_id` value) in each app within the past 7 days. Is it possible that events were sent with the same `insert_id` during that time?

Best regards,
Audrey


P.S. Checkout upcoming events and user meetups on our events page.

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Audrey,

I still need your help.
The issue is not only with Apr 10th.. The issue started on Apr 10th and continues to this day

https://app.amplitude.com/analytics/eeva/chart/6qtcz7zb

Up to Apr 9th.. there was 600-1,000 events per day .. over 90 different EVENT types

https://app.amplitude.com/analytics/eeva/chart/6qtcz7zb/edit/ev3jfdb3
After Apr 10th… There is only 4-6 events per day…. 
- and if you have a loo.. 4 events fire for ALL USERS, but most of the other events only fire for 1 or 2 users


Why did all the events and data drop off AFTER apr 9th?
Why is all the data still dropping off?

 

Hypothetical Questions

• https://app.amplitude.com/analytics/eeva/chart/ab42zspj
• If something was changed in the mobile app code….
  • How did it impact all users on the same day?
  • How did it impact users using a old version of the app?
  • How did it impact users using a older version of the library?

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Hi ​@Adrian Kimmitt were you able to see my latest reply here? 

Our Engineering team took a look at events on Apr 10 and informed me that the only dropped events around Apr 10 were due to deduplication. For context, Amplitude ignores subsequent events sent with the same `insert_id` on the same `device_id` (if the event has a `device_id` value) in each app within the past 7 days. Is it possible that changes were made in the implementation so that events were sent with the same `insert_id` during that time?

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