Amplitude Data Delay
Workaround available Web, iOS, Android, server Updated November 13, 2026Based on 2 user reportsHow we research
Quick answer
Amplitude data can lag because mobile SDKs upload every 30 seconds or 30 events, users may be offline, and user properties sent through the Identity API can arrive late.
Most likely fix: Tune SDK upload settings
How to fix it
Try these in order — the most common fix is first.
1. Tune SDK upload settings
- Lower flushIntervalMillis or flushQueueSize (Android Kotlin) or eventUploadPeriodSeconds/eventUploadThreshold (iOS)
- Call flush() after critical events
Did this fix it?2. Check ingestion health
- Open the Ingestion Monitor and look for spikes in 429 errors
- For Batch API or server-side sends, schedule batches more often
Did this fix it?3. Wait for merges to settle
- User counts shift as anonymous users merge into known profiles; compare again after 24 hours
Did this fix it?
Symptoms
Recent events are missing or counts keep changing hours later.
Why it happens
- Mobile SDK upload threshold of 30 seconds or 30 events
- User was offline when events fired
- Identify/user property updates arrive late
- 429 throttling at peak traffic
This guide also covers
- amplitude data delay
- amplitude data not updating
- amplitude real time data delay
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