Slack App Performance Lag: Slow Opening and Delayed Image Sending
Users experience frequent lag when opening Slack to send messages and delays when sending images, leading some to prefer alternatives like WhatsApp for team communication. This performance friction undermines Slack's core real-time messaging value proposition.
Signal
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Similar Problems
surfaced semanticallySlack Mobile App Search and Notification-Linked Media Fail to Load
Users report that Slack's mobile app is slow and unreliable, with search returning a blank page most of the time and images not opening when accessed via thread notifications. These core functions failing undermines the app's usability for on-the-go communication. The issue appears to be a persistent mobile-specific reliability gap rather than an isolated incident.
Slack Mobile App Runs Slow and Drains Battery During Meetings
A Slack user reports that the mobile app becomes sluggish during meetings, causing the phone to overheat and the battery to drain quickly. The user describes it as one of the worst communication apps they have used and would abandon it if not required for work, signaling strong dissatisfaction with mobile performance.
Slack Notifications Arrive Late and App Feels Bulky
A user reports Slack's notifications consistently arrive late and finds the overall app heavy and cumbersome to use day-to-day, calling the experience a waste of time. The complaint centers on core reliability of the notification system in an established, dominant collaboration tool.
Slack Lacks Visibility Into Who Has Seen Group Messages
Slack users in group conversations cannot tell how many members have viewed a message, leaving senders unsure whether important communications were received.
Slack mobile app has unreliable uploads and duplicate notifications
A long-time Slack user reports the mobile app's UI does not follow standard mobile conventions, image uploads fail intermittently with unclear error states, and notifications fire on phone even when the desktop client is already active.
Problem descriptions, scores, analysis, and solution blueprints may be updated as new community data becomes available.